{"product_id":"ez-neck","title":"EZ-NECK™","description":"\u003cdiv class=\"shogun-root\" data-shogun-id=\"6571df6acf811200da2c482a\" data-shogun-site-id=\"d921f9ba-aa7a-4156-9e44-53aad23b56fb\" data-shogun-page-id=\"6571df6acf811200da2c482a\" data-shogun-page-version-id=\"6aa1a78fab1bdacab4bb4523\" data-shogun-platform-type=\"shopify\" data-shogun-variant-id=\"6aa1a78fab1bdacab4bb4648\" data-shogun-page-type=\"product\" data-shogun-power-up-type=\"\" data-shogun-power-up-id=\"\" data-region=\"main\"\u003e \u003cdiv id=\"s-2475a043-6475-4fbd-abb8-fbacaf94743a\" class=\"shg-c shg-product rca-product-view \" data-is-product-box=\"true\"\u003e \u003cdiv id=\"s-c805f854-c07b-4d93-b7d7-587786a1f961\" class=\"shg-c shg-align-left\"\u003e \u003clink rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\"\u003e \u003clink rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin\u003e \u003clink rel=\"stylesheet\" href=\"https:\/\/fonts.googleapis.com\/css2?family=Archivo:ital,wdth,wght@0,62..125,100..900;1,62..125,100..900\u0026amp;family=IBM+Plex+Mono:wght@400;500;600\u0026amp;display=swap\"\u003e \u003cstyle\u003e\n  .ck-page {\n    --ink:#101215;\n    --graphite:#16181C;\n    --graphite-2:#1D2025;\n    --chalk:#F3F4F2;\n    --white:#FFFFFF;\n    --line:#E1E3DF;\n    --line-dark:rgba(255,255,255,.09);\n    --muted:#69707A;\n    --muted-dark:#9AA1AB;\n    --blue:#1265B5;\n    --blue-d:#0D4E8F;\n    --green:#1E7A46;\n    --green-tint:#E9F4EE;\n    --star:#E8A13A;\n    --new:#B54412;\n    --r:8px;\n    --fa:\"Archivo\",\"Helvetica Neue\",Arial,sans-serif;\n    --fm:\"IBM Plex Mono\",\"SF Mono\",Menlo,monospace;\n\n    font-family:var(--fa); font-weight:400; font-size:15px; line-height:1.55;\n    color:var(--ink); background:var(--white);\n    -webkit-font-smoothing:antialiased;\n  }\n  .ck-page *, .ck-page *::before, .ck-page *::after { box-sizing:border-box; margin:0; padding:0; }\n  .ck-page img { max-width:100%; display:block; }\n  .ck-page button { font-family:inherit; -webkit-appearance:none; touch-action:manipulation; }\n\n  .ck-w { max-width:1200px; margin:0 auto; padding:0 clamp(16px,3.5vw,32px); }\n  .ck-sec { padding:clamp(52px,7vw,90px) 0; border-top:1px solid var(--line); }\n\n  .ck-eyebrow {\n    font-family:var(--fm); font-size:11px; font-weight:600;\n    letter-spacing:.22em; text-transform:uppercase; color:var(--muted);\n  }\n  .ck-h2 {\n    font-family:var(--fa); font-stretch:112%; font-weight:800;\n    font-size:clamp(26px,3.6vw,42px); line-height:1.02; letter-spacing:-.01em;\n    text-transform:uppercase; color:var(--ink); margin-top:10px;\n  }\n  .ck-sechead { margin-bottom:clamp(28px,4vw,44px); }\n  .ck-sechead--center { text-align:center; }\n  .ck-subline { margin-top:14px; font-size:15px; color:var(--muted); max-width:56ch; line-height:1.6; }\n  .ck-sechead--center .ck-subline { margin-left:auto; margin-right:auto; }\n\n  .ck-pill {\n    display:inline-block; font-family:var(--fm); font-size:10px; font-weight:600;\n    letter-spacing:.12em; text-transform:uppercase;\n    padding:4px 9px; border-radius:4px; line-height:1.2;\n  }\n  .ck-pill--ink  { background:var(--ink); color:var(--white); }\n  .ck-pill--blue { background:var(--blue); color:var(--white); }\n  .ck-pill--save { background:var(--green-tint); color:var(--green); }\n\n  .ck-check {\n    flex:0 0 18px; width:18px; height:18px; margin-top:1px;\n    display:flex; align-items:center; justify-content:center;\n    background:var(--green-tint); color:var(--green); border-radius:50%;\n  }\n  .ck-check svg { width:10px; height:10px; }\n\n  \/* ============ 1 · UTILITY STRIP ============ *\/\n  .ck-util { background:var(--ink); color:var(--white); }\n  .ck-util__row {\n    display:flex; flex-wrap:wrap; justify-content:center; gap:8px 28px; padding:9px 0;\n    font-family:var(--fm); font-size:10.5px; font-weight:500;\n    letter-spacing:.14em; text-transform:uppercase;\n  }\n  .ck-util__row span { display:flex; align-items:center; gap:7px; opacity:.92; }\n  .ck-util__star { width:12px; height:12px; color:var(--star); }\n\n  \/* ============ 2 · HERO ============ *\/\n  .ck-hero { padding:clamp(24px,4vw,48px) 0 clamp(44px,6vw,72px); border-top:0; }\n  .ck-hero__grid { display:grid; grid-template-columns:1fr; gap:32px; }\n  @media (min-width:921px){\n    .ck-hero__grid { grid-template-columns:7fr 5fr; gap:clamp(32px,4vw,56px); align-items:start; }\n  }\n\n  \/* stock toggle *\/\n  .ezn-block--in, .ezn-block--out { display:none; }\n  .ck-hero[data-stock=\"in\"]  .ezn-block--in  { display:flex; flex-direction:column; gap:10px; }\n  .ck-hero[data-stock=\"in\"]  .ezn-stock--in  { display:flex; }\n  .ck-hero[data-stock=\"out\"] .ezn-block--out { display:flex; flex-direction:column; gap:10px; }\n  .ck-hero[data-stock=\"out\"] .ezn-stock--out { display:flex; }\n  .ezn-stock--in, .ezn-stock--out { display:none; }\n\n  \/* gallery *\/\n  .ezn-gallery { display:flex; flex-direction:column; gap:10px; position:sticky; top:16px; }\n  @media (max-width:920px){ .ezn-gallery { position:static; } }\n  .ezn-gallery__stage {\n    position:relative; background:var(--chalk);\n    border:1px solid var(--line); border-radius:var(--r);\n    overflow:hidden; aspect-ratio:1\/1;\n  }\n  .ezn-gallery__track {\n    display:flex; width:100%; height:100%; overflow-x:auto;\n    scroll-snap-type:x mandatory; scroll-behavior:smooth;\n    scrollbar-width:none; -ms-overflow-style:none;\n  }\n  .ezn-gallery__track::-webkit-scrollbar { display:none; }\n  .ezn-gallery__slide { flex:0 0 100%; width:100%; height:100%; scroll-snap-align:start; scroll-snap-stop:always; }\n  .ezn-gallery__slide img { width:100%; height:100%; object-fit:cover; }\n  .ezn-gallery__model {\n    position:absolute; top:14px; right:14px; z-index:3; pointer-events:none;\n    background:var(--blue); color:var(--white);\n    font-family:var(--fm); font-size:10px; font-weight:600;\n    letter-spacing:.14em; text-transform:uppercase;\n    padding:5px 10px; border-radius:4px;\n  }\n  .ezn-gallery__arrow {\n    position:absolute; top:50%; transform:translateY(-50%);\n    width:42px; height:42px; z-index:3; cursor:pointer;\n    background:var(--white); border:1px solid var(--line); border-radius:50%;\n    display:flex; align-items:center; justify-content:center;\n    color:var(--ink); transition:border-color .15s, opacity .15s;\n  }\n  .ezn-gallery__arrow:hover { border-color:var(--ink); }\n  .ezn-gallery__arrow:disabled { opacity:0; pointer-events:none; }\n  .ezn-gallery__arrow svg { width:18px; height:18px; }\n  .ezn-gallery__arrow--prev { left:14px; }\n  .ezn-gallery__arrow--next { right:14px; }\n  .ezn-gallery__counter {\n    position:absolute; bottom:14px; right:14px; z-index:3; pointer-events:none;\n    background:var(--ink); color:var(--white);\n    font-family:var(--fm); font-size:10.5px; letter-spacing:.1em;\n    padding:4px 10px; border-radius:4px;\n  }\n  .ezn-gallery__thumbs {\n    display:flex; gap:7px; overflow-x:auto; overflow-y:hidden;\n    scroll-behavior:smooth; scrollbar-width:none; -ms-overflow-style:none; padding:2px 0;\n  }\n  .ezn-gallery__thumbs::-webkit-scrollbar { display:none; }\n  .ezn-gallery__thumb {\n    flex:0 0 calc((100% - 63px)\/10); aspect-ratio:1\/1;\n    background:var(--white); border:1px solid var(--line); border-radius:5px;\n    overflow:hidden; cursor:pointer; padding:0; opacity:.55;\n    transition:border-color .15s, opacity .15s;\n  }\n  .ezn-gallery__thumb img { width:100%; height:100%; object-fit:cover; }\n  .ezn-gallery__thumb[aria-current=\"true\"] { border-color:var(--ink); opacity:1; }\n  .ezn-gallery__thumb:hover { opacity:1; }\n\n  \/* buy box *\/\n  .ezn-info { display:flex; flex-direction:column; gap:16px; }\n  .ezn-info__title {\n    font-family:var(--fa); font-stretch:115%; font-weight:850;\n    font-size:clamp(30px,4vw,44px); line-height:.98; letter-spacing:-.01em;\n    text-transform:uppercase; color:var(--ink);\n  }\n  .ezn-info__product {\n    display:block; margin-top:8px;\n    font-family:var(--fm); font-stretch:normal; font-size:11.5px; font-weight:500;\n    letter-spacing:.16em; text-transform:uppercase; color:var(--muted);\n  }\n  #judgeme_badge_placeholder { min-height:18px; }\n  .ezn-info__pitch { font-size:15px; line-height:1.55; max-width:46ch; }\n  .ezn-info__pitch b { font-weight:700; }\n\n  .ezn-feats { list-style:none; display:flex; flex-direction:column; gap:8px; }\n  .ezn-feats li { display:flex; align-items:flex-start; gap:10px; font-size:13.5px; line-height:1.4; }\n  .ezn-feats b { font-weight:700; }\n\n  \/* tier radio cards *\/\n  .ezn-tiers { display:flex; flex-direction:column; gap:10px; border-top:1px solid var(--line); padding-top:16px; }\n  .ezn-tiers__label {\n    font-family:var(--fm); font-size:11px; font-weight:600;\n    letter-spacing:.18em; text-transform:uppercase; color:var(--muted);\n  }\n  .ezn-tiers__grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; }\n  .ezn-tier {\n    position:relative; text-align:left;\n    display:flex; flex-direction:column; gap:4px;\n    padding:14px; background:var(--white);\n    border:1px solid var(--line); border-radius:var(--r); cursor:pointer;\n    transition:border-color .15s, box-shadow .15s;\n  }\n  .ezn-tier:hover { border-color:var(--ink); }\n  .ezn-tier[aria-pressed=\"true\"] { border-color:var(--blue); box-shadow:0 0 0 1px var(--blue); }\n  .ezn-tier[data-available=\"false\"] { opacity:.5; cursor:not-allowed; }\n  .ezn-tier__flag {\n    position:absolute; top:-9px; left:12px;\n    background:var(--blue); color:var(--white);\n    font-family:var(--fm); font-size:9px; font-weight:600;\n    letter-spacing:.1em; text-transform:uppercase;\n    padding:3px 8px; border-radius:3px; line-height:1.2;\n    opacity:0; transition:opacity .15s;\n  }\n  .ezn-tier[aria-pressed=\"true\"] .ezn-tier__flag { opacity:1; }\n  .ezn-tier__name {\n    font-family:var(--fa); font-stretch:108%; font-weight:800; font-size:18px;\n    letter-spacing:.02em; text-transform:uppercase; color:var(--ink);\n  }\n  .ezn-tier__desc { font-size:12px; color:var(--muted); line-height:1.35; }\n  .ezn-tier__desc b { color:var(--ink); font-weight:700; }\n  .ezn-tier__price { font-family:var(--fm); font-size:14px; font-weight:600; color:var(--ink); margin-top:4px; font-variant-numeric:tabular-nums; }\n\n  .ezn-price-row { display:flex; align-items:baseline; gap:12px; flex-wrap:wrap; }\n  .ezn-price { font-family:var(--fm); font-size:28px; font-weight:600; color:var(--ink); line-height:1; font-variant-numeric:tabular-nums; }\n  .ezn-installments { font-size:13px; color:var(--muted); }\n  .ezn-installments b { font-family:var(--fm); color:var(--ink); font-weight:600; }\n\n  .ezn-stock { font-size:13.5px; align-items:center; gap:9px; line-height:1.4; }\n  .ezn-stock b { font-weight:700; }\n  .ezn-stock__dot { width:8px; height:8px; border-radius:50%; flex:0 0 8px; }\n  .ezn-stock--in  .ezn-stock__dot { background:var(--green); }\n  .ezn-stock--out .ezn-stock__dot { background:var(--new); }\n\n  .ezn-cta__btn {\n    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:4px;\n    width:100%; background:var(--blue); color:var(--white);\n    border:0; border-radius:var(--r); padding:15px 20px; cursor:pointer;\n    transition:background .15s;\n  }\n  .ezn-cta__btn:hover { background:var(--blue-d); }\n  .ezn-cta__main {\n    display:flex; align-items:baseline; justify-content:center; gap:10px;\n    font-family:var(--fa); font-stretch:108%; font-weight:800;\n    font-size:16px; letter-spacing:.04em; text-transform:uppercase; line-height:1.1;\n  }\n  .ezn-cta__main .ezn-cta__price { font-family:var(--fm); font-weight:600; font-variant-numeric:tabular-nums; }\n  .ezn-cta__sub { font-size:12px; color:rgba(255,255,255,.85); line-height:1.2; }\n\n  \/* notify *\/\n  .ezn-notify__label { font-family:var(--fm); font-size:11px; font-weight:600; letter-spacing:.16em; text-transform:uppercase; color:var(--ink); }\n  .ezn-notify__row { display:flex; gap:8px; }\n  .ezn-notify__input {\n    flex:1; min-width:0; font-family:var(--fa); font-size:15px;\n    padding:13px 15px; border:1px solid var(--line); border-radius:var(--r);\n    background:var(--white); color:var(--ink); outline:none; transition:border-color .15s;\n  }\n  .ezn-notify__input:focus { border-color:var(--blue); }\n  .ezn-notify__btn {\n    display:flex; align-items:center; justify-content:center;\n    background:var(--ink); color:var(--white);\n    font-family:var(--fa); font-stretch:106%; font-weight:700; font-size:13px;\n    letter-spacing:.06em; text-transform:uppercase;\n    border:0; border-radius:var(--r); padding:0 20px; cursor:pointer;\n    transition:background .15s; white-space:nowrap;\n  }\n  .ezn-notify__btn:hover { background:var(--blue); }\n  .ezn-notify__btn:disabled { opacity:.6; cursor:not-allowed; }\n  .ezn-notify__hint { font-size:12px; color:var(--muted); }\n  .ezn-notify__status { display:none; font-size:13px; padding:11px 13px; border-radius:6px; line-height:1.4; }\n  .ezn-notify__status--ok  { background:var(--green-tint); color:var(--green); border:1px solid #C6E5CC; }\n  .ezn-notify__status--err { background:#FBECE8; color:var(--new); border:1px solid #F0CFC6; }\n  .ezn-notify[data-state=\"success\"] .ezn-notify__row,\n  .ezn-notify[data-state=\"success\"] .ezn-notify__hint,\n  .ezn-notify[data-state=\"success\"] .ezn-notify__label { display:none; }\n  .ezn-notify[data-state=\"success\"] .ezn-notify__status--ok { display:block; }\n  .ezn-notify[data-state=\"error\"]   .ezn-notify__status--err { display:block; }\n\n  .ezn-trust { list-style:none; display:grid; grid-template-columns:repeat(3,1fr); gap:8px; }\n  .ezn-trust__item {\n    display:flex; align-items:center; gap:8px;\n    background:var(--chalk); border:1px solid var(--line); border-radius:6px;\n    padding:10px 11px; font-size:11.5px; line-height:1.25;\n  }\n  .ezn-trust__item svg { flex:0 0 15px; width:15px; height:15px; color:var(--muted); }\n  @media (max-width:480px){ .ezn-trust { grid-template-columns:1fr; } }\n\n  \/* ============ 3 · PRESS QUOTE STRIP (GGR) ============ *\/\n  .ck-press { text-align:center; }\n  .ck-press__quote {\n    font-family:var(--fa); font-weight:600;\n    font-size:clamp(19px,2.4vw,26px); line-height:1.45; letter-spacing:-.01em;\n    max-width:34ch; margin:0 auto;\n  }\n  .ck-press__quote em { font-style:normal; border-bottom:2px solid var(--blue); }\n  .ck-press__logo { width:170px; height:auto; margin:22px auto 0; opacity:.85; }\n\n  \/* ============ 4 · BENEFITS BAND ============ *\/\n  .ck-cap { background:var(--chalk); }\n  .ck-cap__grid {\n    display:grid; grid-template-columns:repeat(3,1fr); gap:1px;\n    background:var(--line); border:1px solid var(--line); border-radius:var(--r); overflow:hidden;\n  }\n  @media (max-width:820px){ .ck-cap__grid { grid-template-columns:repeat(2,1fr); } }\n  .ck-cap__cell { background:var(--white); padding:22px 20px; }\n  .ck-cap__icon { width:24px; height:24px; color:var(--ink); margin-bottom:12px; }\n  .ck-cap__icon svg { width:100%; height:100%; }\n  .ck-cap__name {\n    font-family:var(--fa); font-stretch:108%; font-weight:800; font-size:15px;\n    letter-spacing:.02em; text-transform:uppercase;\n  }\n  .ck-cap__desc { font-size:13px; color:var(--muted); line-height:1.5; margin-top:5px; }\n\n  \/* ============ 5 · GRAPHITE SCIENCE BAND ============ *\/\n  .ck-auth { background:var(--graphite); color:var(--white); border-top:0; }\n  .ck-auth .ck-eyebrow { color:var(--muted-dark); }\n  .ck-auth__grid { display:grid; grid-template-columns:1fr; gap:clamp(32px,5vw,56px); }\n  @media (min-width:880px){ .ck-auth__grid { grid-template-columns:6fr 6fr; align-items:center; } }\n  .ck-auth__quote {\n    font-family:var(--fa); font-weight:600;\n    font-size:clamp(21px,2.8vw,29px); line-height:1.35; letter-spacing:-.01em;\n    margin-top:14px;\n  }\n  .ck-auth__quote em { font-style:normal; border-bottom:2px solid var(--blue); }\n  .ck-auth__cite { margin-top:14px; font-family:var(--fm); font-size:11px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--muted-dark); }\n  .ck-auth__body { margin-top:18px; font-size:14.5px; line-height:1.6; color:var(--muted-dark); max-width:52ch; }\n  .ck-auth__body b { color:var(--white); font-weight:600; }\n  .ck-auth__stats {\n    display:grid; grid-template-columns:repeat(2,1fr); gap:1px;\n    background:var(--line-dark); border:1px solid var(--line-dark); border-radius:var(--r); overflow:hidden;\n  }\n  .ck-auth__stat { background:var(--graphite-2); padding:22px 20px; }\n  .ck-auth__val {\n    font-family:var(--fm); font-weight:600; font-variant-numeric:tabular-nums;\n    font-size:clamp(26px,3vw,36px); line-height:1; color:var(--white);\n  }\n  .ck-auth__val small { font-size:.5em; font-weight:500; color:var(--muted-dark); margin-left:2px; }\n  .ck-auth__key {\n    margin-top:8px; font-family:var(--fm); font-size:10.5px; font-weight:500;\n    letter-spacing:.14em; text-transform:uppercase; color:var(--muted-dark);\n  }\n  .ck-auth__src { margin-top:6px; font-size:11.5px; color:var(--muted-dark); line-height:1.4; }\n\n  \/* ============ 6 · PRO VS MAX TABLE ============ *\/\n  .ck-cmp { max-width:820px; margin:0 auto; border:1px solid var(--line); border-radius:var(--r); overflow:hidden; }\n  .ck-cmp__row { display:grid; grid-template-columns:1.2fr 1fr 1fr; border-top:1px solid var(--line); }\n  .ck-cmp__row:first-child { border-top:0; }\n  .ck-cmp__row--head { background:var(--chalk); }\n  .ck-cmp__cell { padding:14px 18px; font-size:13.5px; display:flex; align-items:center; }\n  .ck-cmp__cell--k { font-family:var(--fm); font-size:11px; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); }\n  .ck-cmp__cell--v { font-family:var(--fm); font-size:13px; font-weight:600; font-variant-numeric:tabular-nums; }\n  .ck-cmp__cell--sel { background:rgba(18,101,181,.05); }\n  .ck-cmp__prod { display:flex; flex-direction:column; gap:8px; padding:18px; }\n  .ck-cmp__prod img { width:100%; max-width:130px; aspect-ratio:1\/1; object-fit:cover; border:1px solid var(--line); border-radius:6px; }\n  .ck-cmp__name { font-family:var(--fa); font-stretch:108%; font-weight:800; font-size:16px; text-transform:uppercase; }\n  .ck-cmp__price { font-family:var(--fm); font-size:12.5px; font-weight:600; color:var(--muted); }\n  @media (max-width:560px){\n    .ck-cmp__cell { padding:11px 10px; font-size:12px; }\n    .ck-cmp__cell--k { font-size:9.5px; }\n    .ck-cmp__prod { padding:12px 10px; }\n  }\n\n  \/* ============ 7 · EXERCISE TABS ============ *\/\n  .ck-tabs__nav { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:clamp(20px,3vw,32px); }\n  .ck-tab {\n    font-family:var(--fm); font-size:11px; font-weight:600;\n    letter-spacing:.12em; text-transform:uppercase;\n    padding:10px 18px; border:1px solid var(--line); border-radius:999px;\n    background:var(--white); color:var(--ink); cursor:pointer;\n    transition:border-color .15s, background .15s, color .15s;\n  }\n  .ck-tab:hover { border-color:var(--ink); }\n  .ck-tab[aria-selected=\"true\"] { background:var(--blue); border-color:var(--blue); color:var(--white); }\n  .ck-tabpanel { display:none; }\n  .ck-tabpanel.is-active { display:grid; }\n  .ck-tabpanel { grid-template-columns:1fr; gap:clamp(22px,3.5vw,44px); align-items:center; }\n  @media (min-width:820px){ .ck-tabpanel.is-active { grid-template-columns:5fr 7fr; } }\n  .ck-tabpanel__media { border:1px solid var(--line); border-radius:var(--r); overflow:hidden; background:var(--chalk); }\n  .ck-tabpanel__media img { width:100%; aspect-ratio:1\/1; object-fit:cover; }\n  .ck-tabpanel__name {\n    font-family:var(--fa); font-stretch:110%; font-weight:800;\n    font-size:clamp(20px,2.4vw,28px); line-height:1.05; text-transform:uppercase;\n  }\n  .ck-tabpanel__desc { margin-top:12px; font-size:14.5px; line-height:1.6; color:var(--muted); max-width:48ch; }\n  .ck-tabpanel__meta { display:flex; gap:1px; margin-top:18px; background:var(--line); border:1px solid var(--line); border-radius:var(--r); overflow:hidden; max-width:300px; }\n  .ck-tabpanel__stat { flex:1; background:var(--chalk); padding:12px 16px; }\n  .ck-tabpanel__statv { font-family:var(--fm); font-weight:600; font-size:16px; line-height:1; font-variant-numeric:tabular-nums; }\n  .ck-tabpanel__statk { margin-top:5px; font-family:var(--fm); font-size:9.5px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }\n\n  \/* ============ 8 · VIDEO + HUBERMAN ============ *\/\n  .ck-video { background:var(--chalk); }\n  .ck-video__wrap {\n    max-width:960px; margin:clamp(28px,4vw,40px) auto 0;\n    border:1px solid var(--line); border-radius:var(--r); overflow:hidden; background:var(--ink);\n  }\n  .ck-hub { max-width:820px; margin:clamp(36px,5vw,56px) auto 0; border:1px solid var(--line); border-radius:var(--r); background:var(--white); padding:clamp(24px,4vw,40px); }\n  .ck-hub__quote {\n    font-family:var(--fa); font-weight:600;\n    font-size:clamp(18px,2.2vw,24px); line-height:1.5; letter-spacing:-.01em;\n  }\n  .ck-hub__quote em { font-style:normal; border-bottom:2px solid var(--blue); }\n  .ck-hub__cite { margin-top:16px; font-family:var(--fm); font-size:11px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }\n\n  \/* ============ 9 · ATTRACTIVENESS STUDY ============ *\/\n  .ck-study__grid { display:grid; grid-template-columns:1fr; gap:clamp(20px,3vw,32px); }\n  @media (min-width:820px){ .ck-study__grid { grid-template-columns:1fr 1fr; } }\n  .ck-study__card { border:1px solid var(--line); border-radius:var(--r); background:var(--white); padding:20px; }\n  .ck-study__label { font-family:var(--fm); font-size:11px; font-weight:600; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); margin-bottom:14px; display:flex; justify-content:space-between; }\n  .ck-study__imgs { display:grid; grid-template-columns:1fr 1fr; gap:10px; }\n  .ck-study__imgcard { position:relative; border:1px solid var(--line); border-radius:6px; overflow:hidden; }\n  .ck-study__imgcard img { width:100%; aspect-ratio:3\/4; object-fit:cover; }\n  .ck-study__tag {\n    position:absolute; top:8px; left:8px;\n    font-family:var(--fm); font-size:9.5px; font-weight:600; letter-spacing:.1em; text-transform:uppercase;\n    padding:4px 8px; border-radius:4px;\n  }\n  .ck-study__tag--before { background:var(--ink); color:var(--white); }\n  .ck-study__tag--after  { background:var(--green); color:var(--white); }\n  .ck-study__delta {\n    display:flex; align-items:baseline; justify-content:space-between; gap:12px;\n    margin-top:14px; padding:14px 16px;\n    background:var(--green-tint); border-radius:6px;\n  }\n  .ck-study__deltak { font-size:13px; font-weight:600; color:var(--green); }\n  .ck-study__deltav { font-family:var(--fm); font-size:22px; font-weight:600; color:var(--green); font-variant-numeric:tabular-nums; }\n  .ck-study__method { max-width:820px; margin:clamp(24px,3.5vw,36px) auto 0; font-size:13.5px; line-height:1.65; color:var(--muted); }\n  .ck-study__method b { color:var(--ink); font-weight:700; }\n  .ck-study__method a { color:var(--blue); font-weight:600; text-decoration:none; }\n  .ck-study__method a:hover { text-decoration:underline; }\n\n  \/* ============ 10 · VIDEO REVIEWS ============ *\/\n  .ck-yt { background:var(--chalk); }\n  .ck-yt__grid { display:grid; grid-template-columns:1fr; gap:clamp(16px,2.5vw,24px); }\n  @media (min-width:820px){ .ck-yt__grid { grid-template-columns:repeat(3,1fr); } }\n  .ck-yt__card { border:1px solid var(--line); border-radius:var(--r); overflow:hidden; background:var(--white); }\n  .ck-yt__frame { aspect-ratio:16\/9; background:var(--ink); }\n  .ck-yt__frame iframe { width:100%; height:100%; border:0; display:block; }\n  .ck-yt__title { padding:14px 16px; font-size:13.5px; font-weight:600; line-height:1.4; }\n\n  \/* ============ 11 · HERITAGE TIMELINE ============ *\/\n  .ck-time__list { max-width:820px; margin:0 auto; border-left:1px solid var(--line); padding-left:clamp(20px,3vw,32px); display:flex; flex-direction:column; gap:clamp(24px,3.5vw,36px); }\n  .ck-time__item { position:relative; }\n  .ck-time__item::before {\n    content:\"\"; position:absolute; left:calc(-1 * clamp(20px,3vw,32px) - 4.5px);\n    top:6px; width:9px; height:9px; border-radius:50%;\n    background:var(--white); border:2px solid var(--blue);\n  }\n  .ck-time__era { font-family:var(--fm); font-size:11px; font-weight:600; letter-spacing:.18em; text-transform:uppercase; color:var(--muted); }\n  .ck-time__quote { margin-top:6px; font-size:16px; font-weight:600; line-height:1.5; max-width:52ch; }\n  .ck-time__src { margin-top:4px; font-size:12.5px; color:var(--muted); }\n\n  \/* ============ 12 · FAQ ============ *\/\n  .ck-faq__grid { display:grid; grid-template-columns:1fr; gap:clamp(24px,4vw,48px); }\n  @media (min-width:880px){ .ck-faq__grid { grid-template-columns:4fr 8fr; align-items:start; } }\n  .ck-faq__list { display:flex; flex-direction:column; }\n  .ck-faq__item { border-top:1px solid var(--line); }\n  .ck-faq__item:last-child { border-bottom:1px solid var(--line); }\n  .ck-faq__q {\n    width:100%; text-align:left; background:none; border:0; cursor:pointer;\n    padding:18px 4px; display:flex; align-items:center; justify-content:space-between; gap:16px;\n    font-family:var(--fa); font-stretch:106%; font-weight:700; font-size:15px; line-height:1.35;\n    color:var(--ink);\n  }\n  .ck-faq__plus { flex:0 0 20px; width:20px; height:20px; position:relative; color:var(--muted); transition:color .15s; }\n  .ck-faq__plus::before, .ck-faq__plus::after {\n    content:\"\"; position:absolute; top:50%; left:50%; background:currentColor; border-radius:1px;\n    transition:transform .2s;\n  }\n  .ck-faq__plus::before { width:14px; height:2px; transform:translate(-50%,-50%); }\n  .ck-faq__plus::after  { width:2px; height:14px; transform:translate(-50%,-50%); }\n  .ck-faq__item.is-open .ck-faq__plus { color:var(--blue); }\n  .ck-faq__item.is-open .ck-faq__plus::after { transform:translate(-50%,-50%) rotate(90deg); }\n  .ck-faq__a { max-height:0; overflow:hidden; transition:max-height .3s cubic-bezier(.4,0,.2,1); }\n  .ck-faq__item.is-open .ck-faq__a { max-height:1200px; }\n  .ck-faq__a-inner { padding:0 4px 20px; font-size:14px; line-height:1.7; color:var(--muted); }\n  .ck-faq__a-inner p { margin-bottom:10px; }\n  .ck-faq__a-inner p:last-child { margin-bottom:0; }\n  .ck-faq__a-inner strong { color:var(--ink); font-weight:700; }\n  .ck-faq__a-inner a { color:var(--blue); font-weight:600; text-decoration:none; }\n  .ck-faq__a-inner a:hover { text-decoration:underline; }\n  .ck-faq__a-inner ul { margin:10px 0 0; padding-left:18px; }\n  .ck-faq__a-inner ul ul { margin-top:6px; }\n  .ck-faq__a-inner li { margin-bottom:8px; }\n  .ck-faq__a-inner li::marker { color:var(--blue); }\n\n  \/* ============ 13 · FINAL CTA ============ *\/\n  .ck-final { background:var(--graphite); color:var(--white); border-top:0; text-align:center; }\n  .ck-final .ck-eyebrow { color:var(--muted-dark); }\n  .ck-final__title {\n    font-family:var(--fa); font-stretch:115%; font-weight:850;\n    font-size:clamp(30px,4.6vw,54px); line-height:1; letter-spacing:-.01em;\n    text-transform:uppercase; margin-top:12px;\n  }\n  .ck-final__sub { margin:16px auto 0; font-size:15px; color:var(--muted-dark); max-width:48ch; line-height:1.6; }\n  .ck-final__btn {\n    display:inline-flex; flex-direction:column; align-items:center; gap:4px;\n    margin-top:28px; background:var(--blue); color:var(--white);\n    border:0; border-radius:var(--r); padding:16px 44px; cursor:pointer;\n    transition:background .15s;\n  }\n  .ck-final__btn:hover { background:var(--blue-d); }\n  .ck-final__points {\n    display:flex; flex-wrap:wrap; justify-content:center; gap:10px 28px;\n    margin-top:26px; font-family:var(--fm); font-size:10.5px; font-weight:500;\n    letter-spacing:.16em; text-transform:uppercase; color:var(--muted-dark);\n    list-style:none;\n  }\n\n  \/* ============ 14 · STICKY ATC BAR ============ *\/\n  .ck-sticky {\n    position:fixed; left:0; right:0; bottom:0; z-index:900;\n    background:var(--white); border-top:1px solid var(--line);\n    box-shadow:0 -8px 24px rgba(16,18,21,.08);\n    transform:translateY(110%); transition:transform .25s ease;\n    padding-bottom:env(safe-area-inset-bottom, 0px);\n  }\n  .ck-sticky.is-visible { transform:translateY(0); }\n  .ck-sticky__row {\n    display:flex; align-items:center; justify-content:space-between; gap:16px;\n    padding:10px clamp(16px,3.5vw,32px); max-width:1200px; margin:0 auto;\n  }\n  .ck-sticky__name { font-family:var(--fa); font-stretch:106%; font-weight:800; font-size:14px; letter-spacing:.02em; text-transform:uppercase; }\n  .ck-sticky__price { font-family:var(--fm); font-weight:600; font-size:14px; color:var(--muted); margin-left:10px; font-variant-numeric:tabular-nums; }\n  .ck-sticky__btn {\n    background:var(--blue); color:var(--white); border:0; border-radius:6px;\n    font-family:var(--fa); font-stretch:106%; font-weight:800; font-size:13px;\n    letter-spacing:.05em; text-transform:uppercase;\n    padding:11px 22px; cursor:pointer; transition:background .15s; white-space:nowrap;\n  }\n  .ck-sticky__btn:hover { background:var(--blue-d); }\n\n  @media (prefers-reduced-motion:reduce){\n    .ck-page * { transition:none!important; animation:none!important; }\n    .ezn-gallery__track { scroll-behavior:auto; }\n  }\n\n  .ck-page .ck-hero__grid \u003e * { min-width:0; }\n  .ck-page .ezn-program-bonus {\n    padding:13px 15px; background:#EAF4FF; border:1px solid #CFE3F7;\n    border-radius:var(--r); color:var(--ink);\n  }\n  .ck-page .ezn-program-bonus__title { font-size:14px; font-weight:700; line-height:1.4; }\n  .ck-page .ezn-program-bonus__detail { margin-top:3px; font-size:12.5px; color:var(--muted); }\n  .ck-page .ezn-program-bonus__link {\n    display:inline-block; margin-top:6px; color:var(--ink); font-size:12.5px;\n    font-weight:600; text-decoration:underline; text-underline-offset:3px;\n  }\n  .ck-page .ezn-program-bonus__link:focus-visible { outline:2px solid var(--blue); outline-offset:4px; }\n  .ck-page .ck-program { background:#EAF4FF; scroll-margin-top:32px; }\n  .ck-page .ck-program__intro { display:grid; grid-template-columns:1.35fr 1fr; gap:32px; align-items:start; }\n  .ck-page .ck-program__included { font-family:var(--fm); font-size:11px; font-weight:600; letter-spacing:.12em; text-transform:uppercase; }\n  .ck-page .ck-program__list { list-style:none; display:grid; gap:12px; padding-top:6px; }\n  .ck-page .ck-program__list li { padding-bottom:12px; border-bottom:1px solid #CFE3F7; font-size:14px; }\n  .ck-page .ck-program__tracks { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:30px; }\n  .ck-page .ck-program__track { padding:22px; background:var(--white); border:1px solid #CFE3F7; border-radius:var(--r); }\n  .ck-page .ck-program__level { font-family:var(--fm); font-size:10px; letter-spacing:.12em; color:var(--muted); }\n  .ck-page .ck-program__name { margin-top:10px; font-size:18px; font-weight:750; }\n  .ck-page .ck-program__desc { margin-top:8px; font-size:13px; color:var(--muted); line-height:1.55; }\n  .ck-page .ck-program__note { margin-top:18px; font-size:12px; color:var(--muted); }\n  @media (max-width:700px) {\n    .ck-page .ck-program__intro, .ck-page .ck-program__tracks { grid-template-columns:1fr; gap:16px; }\n    .ck-page .ck-program__track { padding:18px; }\n  }\n\n  .ck-page .ck-program__intro { grid-template-columns:1.15fr 1fr; gap:22px 44px; align-items:center; }\n  .ck-page .ck-program__copy { grid-column:1; grid-row:1; align-self:end; }\n  .ck-page .ck-program__book { grid-column:2; grid-row:1 \/ span 2; min-width:0; }\n  .ck-page .ck-program__book img { width:100%; height:auto; border-radius:var(--r); }\n  .ck-page .ck-program__book figcaption { margin-top:10px; text-align:center; font-size:11px; color:var(--muted); }\n  .ck-page .ck-program__intro \u003e .ck-program__list { grid-column:1; grid-row:2; align-self:start; }\n  @media (max-width:700px) {\n    .ck-page .ck-program__intro { grid-template-columns:1fr; gap:24px; }\n    .ck-page .ck-program__copy { grid-column:1; grid-row:1; }\n    .ck-page .ck-program__book { grid-column:1; grid-row:2; width:100%; max-width:440px; margin:0 auto; }\n    .ck-page .ck-program__intro \u003e .ck-program__list { grid-column:1; grid-row:3; }\n  }\n\u003c\/style\u003e \u003cdiv class=\"ck-page\"\u003e \u003cdiv class=\"ck-util\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-util__row\"\u003e \u003cspan\u003ePrueba sin riesgo de 100 días\u003c\/span\u003e \u003cspan\u003eEnvío gratuito a partir de $100\u003c\/span\u003e \u003cspan\u003e\u003csvg class=\"ck-util__star\" viewbox=\"0 0 24 24\" fill=\"currentColor\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2l2.9 6.3 6.9.8-5.1 4.7 1.4 6.8L12 17.3 5.9 20.6l1.4-6.8L2.2 9.1l6.9-.8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Calificado por levantadores\u003c\/span\u003e \u003cspan\u003eMás de 200.000 clientes\u003c\/span\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003csection class=\"ck-sec ck-hero\" data-stock=\"in\" data-product-handle=\"ez-neck-pro\" aria-label=\"EZ-NECK\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-hero__grid\"\u003e \u003cdiv class=\"ezn-gallery\"\u003e \u003cdiv class=\"ezn-gallery__stage\"\u003e \u003cspan class=\"ezn-gallery__model\"\u003ePRO\u003c\/span\u003e \u003cbutton type=\"button\" class=\"ezn-gallery__arrow ezn-gallery__arrow--prev\" aria-label=\"Imagen anterior\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"15 18 9 12 15 6\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/button\u003e \u003cdiv class=\"ezn-gallery__track\" id=\"ezn-gallery-track\"\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/pro_68b5b325-408b-426a-b9fa-0766a9a6ecf7.jpg?v=1764502146\u0026amp;width=1024\" alt=\"Kensui EZ-NECK PRO — entrenador de cuello con carga de discos\" width=\"1024\" height=\"1024\" loading=\"eager\" fetchpriority=\"high\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/max_88e6e0e7-3d33-427b-bc36-30c712203627.jpg?v=1764502136\u0026amp;width=1024\" alt=\"Kensui EZ-NECK MAX — arnés acolchado premium\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck-pointers.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Características y consejos del EZ-NECK\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck-before-after.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Antes y después con EZ-NECK\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck-benefits.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Beneficios del EZ-NECK\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck1.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck2.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck3.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck4.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck6.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck7.jpg?v=1774806398\u0026amp;width=1024\" alt=\"EZ-NECK en uso\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/neck-curl.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Curl de cuello EZ-NECK (flexión)\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/neck-extension.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Extensión de cuello EZ-NECK\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003cdiv class=\"ezn-gallery__slide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/neck-side-curl.jpg?v=1774806398\u0026amp;width=1024\" alt=\"Curl lateral de cuello EZ-NECK\" width=\"1024\" height=\"1024\" loading=\"lazy\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cbutton type=\"button\" class=\"ezn-gallery__arrow ezn-gallery__arrow--next\" aria-label=\"Imagen siguiente\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"9 18 15 12 9 6\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e \u003c\/button\u003e \u003cdiv class=\"ezn-gallery__counter\" id=\"ezn-gallery-counter\"\u003e1 \/ 14\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ezn-gallery__thumbs\" id=\"ezn-gallery-thumbs\" role=\"tablist\" aria-label=\"Miniaturas de la galería\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ezn-info\" id=\"ezn-buybox\"\u003e \u003ch1 class=\"ezn-info__title\"\u003e Construye un cuello que destaque. \u003csmall class=\"ezn-info__product\"\u003eEZ-NECK™ — Entrenador de cuello de 4 direcciones con carga de discos\u003c\/small\u003e \u003c\/h1\u003e \u003cspan id=\"judgeme_badge_placeholder\"\u003e\u003c\/span\u003e \u003cp class=\"ezn-info__pitch\"\u003e Desarrolla \u003cb\u003efuerza, volumen y postura en el cuello\u003c\/b\u003e cómodamente en las 4 direcciones con una resistencia suave y con carga de discos. \u003c\/p\u003e \u003cul class=\"ezn-feats\" aria-label=\"Características principales\"\u003e \u003cli\u003e\n\u003cspan class=\"ck-check\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003cspan\u003e\u003cb\u003ePortátil\u003c\/b\u003e — entrena en cualquier lugar; cabe en tu bolsa del gimnasio\u003c\/span\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan class=\"ck-check\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003cspan\u003e\u003cb\u003eAsas moleteadas\u003c\/b\u003e y acolchado de espuma para un agarre firme y cómodo\u003c\/span\u003e\n\u003c\/li\u003e \u003cli\u003e\n\u003cspan class=\"ck-check\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"3.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003cspan\u003eCompatible con \u003cb\u003etodos los discos de pesas\u003c\/b\u003e — estándar y olímpicos\u003c\/span\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003cdiv class=\"ezn-tiers\"\u003e \u003cspan class=\"ezn-tiers__label\"\u003eElige tu modelo\u003c\/span\u003e \u003cdiv role=\"radiogroup\" aria-label=\"Modelo\" class=\"ezn-tiers__grid\"\u003e \u003cbutton type=\"button\" class=\"ezn-tier\" role=\"radio\" aria-pressed=\"true\" data-variant-id=\"46187530453204\" data-name=\"PRO\" data-price=\"4900\" data-image=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/pro_68b5b325-408b-426a-b9fa-0766a9a6ecf7.jpg?v=1764502146\"\u003e \u003cspan class=\"ezn-tier__flag\"\u003eSeleccionado\u003c\/span\u003e \u003cspan class=\"ezn-tier__name\"\u003ePRO\u003c\/span\u003e \u003cspan class=\"ezn-tier__desc\"\u003ePolímero DURACORE™\u003c\/span\u003e \u003cspan class=\"ezn-tier__desc\"\u003e\u003cb\u003eCapacidad de 100 lb\u003c\/b\u003e · Acolchado de 20 mm\u003c\/span\u003e \u003cspan class=\"ezn-tier__price\" data-tier-price\u003e$49\u003c\/span\u003e \u003c\/button\u003e \u003cbutton type=\"button\" class=\"ezn-tier\" role=\"radio\" aria-pressed=\"false\" data-variant-id=\"46187530485972\" data-name=\"MAX\" data-price=\"12900\" data-image=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/max_88e6e0e7-3d33-427b-bc36-30c712203627.jpg?v=1764502136\"\u003e \u003cspan class=\"ezn-tier__flag\"\u003eSeleccionado\u003c\/span\u003e \u003cspan class=\"ezn-tier__name\"\u003eMAX\u003c\/span\u003e \u003cspan class=\"ezn-tier__desc\"\u003eAleación de aluminio\u003c\/span\u003e \u003cspan class=\"ezn-tier__desc\"\u003e\u003cb\u003eCapacidad de 200 lb\u003c\/b\u003e · Acolchado de 25 mm\u003c\/span\u003e \u003cspan class=\"ezn-tier__price\" data-tier-price\u003e$129\u003c\/span\u003e \u003c\/button\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ezn-price-row\"\u003e \u003cspan class=\"ezn-price\" id=\"ezn-price\"\u003e$49\u003c\/span\u003e \u003cspan class=\"ezn-installments\"\u003eo 4 pagos de \u003cb id=\"ezn-installment\"\u003e$12.25\u003c\/b\u003e con Shop Pay\u003c\/span\u003e \u003c\/div\u003e \u003cdiv class=\"ezn-stock ezn-stock--in\"\u003e \u003cspan class=\"ezn-stock__dot\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003cspan\u003eEn stock — se envía en 24 horas. Entrega en \u003cb\u003e3–5 días\u003c\/b\u003e\u003cspan id=\"ezn-ship-dest\"\u003e\u003c\/span\u003e.\u003c\/span\u003e \u003c\/div\u003e \u003cdiv class=\"ezn-stock ezn-stock--out\"\u003e \u003cspan class=\"ezn-stock__dot\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003cspan\u003e\u003cb\u003eAgotado\u003c\/b\u003e — pronto habrá reposición. Déjanos tu correo y te avisaremos en cuanto vuelva a estar disponible.\u003c\/span\u003e \u003c\/div\u003e \u003caside class=\"ezn-program-bonus\" aria-label=\"Programa de entrenamiento incluido\"\u003e \u003cp class=\"ezn-program-bonus__title\"\u003ePrograma de entrenamiento gratuito de 12 semanas — valor de $19\u003c\/p\u003e \u003cp class=\"ezn-program-bonus__detail\"\u003ePlanes para principiantes, intermedios y avanzados.\u003c\/p\u003e \u003ca class=\"ezn-program-bonus__link\" href=\"#ck-training-program\"\u003eVer qué incluye ↓\u003c\/a\u003e \u003c\/aside\u003e \u003cform class=\"ezn-block ezn-block--in\" method=\"post\" action=\"\/cart\/add\"\u003e \u003cinput type=\"hidden\" name=\"id\" id=\"ezn-cart-variant\" value=\"46187530453204\"\u003e \u003cinput type=\"hidden\" name=\"quantity\" value=\"1\"\u003e \u003cbutton type=\"submit\" class=\"ezn-cta__btn\"\u003e \u003cspan class=\"ezn-cta__main\"\u003eAñadir al carrito — \u003cspan class=\"ezn-cta__price\" id=\"ezn-cta-price\"\u003e$49\u003c\/span\u003e\u003c\/span\u003e \u003cspan class=\"ezn-cta__sub\"\u003ePrueba sin riesgo de 100 días · devoluciones gratuitas\u003c\/span\u003e \u003c\/button\u003e \u003c\/form\u003e \u003cform class=\"ezn-block ezn-block--out ezn-notify\" method=\"post\" action=\"#\" id=\"ezn-notify-form\"\u003e \u003clabel class=\"ezn-notify__label\" for=\"ezn-notify-email\"\u003eAvísame cuando esté disponible\u003c\/label\u003e \u003cdiv class=\"ezn-notify__row\"\u003e \u003cinput class=\"ezn-notify__input\" id=\"ezn-notify-email\" type=\"email\" name=\"contact[email]\" placeholder=\"you@example.com\" required\u003e \u003cinput type=\"hidden\" name=\"variant_id\" id=\"ezn-notify-variant\" value=\"46187530453204\"\u003e \u003cbutton class=\"ezn-notify__btn\" type=\"submit\"\u003e\u003cspan class=\"ezn-notify__btn-label\"\u003eAvísame\u003c\/span\u003e\u003c\/button\u003e \u003c\/div\u003e \u003cp class=\"ezn-notify__hint\"\u003eSolo te enviaremos un correo sobre esta reposición. Sin spam.\u003c\/p\u003e \u003cp class=\"ezn-notify__status ezn-notify__status--ok\" role=\"status\"\u003e✓ Ya estás en la lista. Te enviaremos un correo en cuanto vuelva a estar disponible.\u003c\/p\u003e \u003cp class=\"ezn-notify__status ezn-notify__status--err\" role=\"alert\"\u003eAlgo salió mal. Inténtalo de nuevo o escribe a support@kensui.com.\u003c\/p\u003e \u003c\/form\u003e \u003cul class=\"ezn-trust\" aria-label=\"Garantías\"\u003e \u003cli class=\"ezn-trust__item\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Prueba sin riesgo de 100 días \u003c\/li\u003e \u003cli class=\"ezn-trust__item\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"1\" y=\"3\" width=\"15\" height=\"13\"\u003e\u003c\/rect\u003e\u003cpath d=\"M16 8h4l3 3v5h-7zM5.5 20a2.5 2.5 0 1 0 0-5 2.5 2.5 0 0 0 0 5zM18.5 20a2.5 2.5 0 1 0 0-5 2.5 2.5 0 0 0 0 5z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Envío gratuito a partir de $100 \u003c\/li\u003e \u003cli class=\"ezn-trust__item\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2\"\u003e\u003c\/path\u003e\u003ccircle cx=\"9\" cy=\"7\" r=\"4\"\u003e\u003c\/circle\u003e\u003cpath d=\"M23 21v-2a4 4 0 0 0-3-3.87M16 3.13a4 4 0 0 1 0 7.75\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Más de 200.000 clientes \u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-press\" aria-label=\"Reseña de prensa\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cp class=\"ck-press__quote\"\u003e“Un equipo resistente. El \u003cem\u003eacolchado resultó muy cómodo\u003c\/em\u003e durante el uso.”\u003c\/p\u003e \u003cimg class=\"ck-press__logo\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/garage-gym-reviews-logo.png?v=1787923775\" alt=\"Garage Gym Reviews\" width=\"475\" height=\"167\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-cap\" aria-label=\"Por qué entrenar el cuello\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003ePor qué importa\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003eUn entrenador, seis razones\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__grid\"\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M13 2 3 14h7l-1 8 10-12h-7z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eIdeal para atletas\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eLos deportes de contacto exigen un cuello capaz de absorber impactos.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cline x1=\"12\" y1=\"20\" x2=\"12\" y2=\"4\"\u003e\u003c\/line\u003e\u003cpolyline points=\"6 10 12 4 18 10\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eMejora la postura\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eUna columna cervical fuerte es la base para mantenerte erguido.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpolyline points=\"4 16 10 10 14 14 20 8\"\u003e\u003c\/polyline\u003e\u003cpolyline points=\"15 8 20 8 20 13\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eAumenta el volumen del cuello\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eLa carga progresiva con discos desarrolla lo que el peso corporal no puede.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"9 12 11 14 15 10\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eReduce lesiones\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eLa fuerza equilibrada en 4 direcciones protege frente a cargas similares al latigazo cervical.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"9\"\u003e\u003c\/circle\u003e\u003cpath d=\"M8 12h8M12 8v8\" opacity=\".5\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eAlivia la rigidez\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eEl movimiento cargado y de rango completo recupera la movilidad que el trabajo de escritorio reduce.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cap__cell\"\u003e \u003cdiv class=\"ck-cap__icon\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.8\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M20 12a8 8 0 1 1-2.3-5.6\"\u003e\u003c\/path\u003e\u003cpolyline points=\"20 3 20 7 16 7\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e \u003cdiv class=\"ck-cap__name\"\u003eIdeal para rehabilitación\u003c\/div\u003e \u003cp class=\"ck-cap__desc\"\u003eEmpieza ligero y progresa con incrementos pequeños y controlados.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-auth\" aria-label=\"La investigación\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-auth__grid\"\u003e \u003cdiv\u003e \u003cdiv class=\"ck-eyebrow\"\u003eLa investigación\u003c\/div\u003e \u003cp class=\"ck-auth__quote\"\u003e“Los datos demuestran que fortalecer el cuello tiene un \u003cem\u003egran potencial como herramienta clave para prevenir las conmociones cerebrales\u003c\/em\u003e.”\u003c\/p\u003e \u003cdiv class=\"ck-auth__cite\"\u003eSean Gregory — revista TIME\u003c\/div\u003e \u003cp class=\"ck-auth__body\"\u003e Un estudio de la Universidad Rutgers descubrió que \u003cb\u003ecada aumento de una libra en la fuerza del cuello reducía un 5 % las probabilidades de sufrir una conmoción cerebral\u003c\/b\u003e; los investigadores recomiendan que los atletas de deportes de alto riesgo, como el fútbol americano y el fútbol, prioricen el entrenamiento del cuello como medida preventiva. \u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-auth__stats\"\u003e \u003cdiv class=\"ck-auth__stat\"\u003e \u003cdiv class=\"ck-auth__val\"\u003e-5\u003csmall\u003e%\u003c\/small\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-auth__key\"\u003eProbabilidades de conmoción por lb\u003c\/div\u003e \u003cdiv class=\"ck-auth__src\"\u003eRutgers Univ., J. Primary Prevention\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-auth__stat\"\u003e \u003cdiv class=\"ck-auth__val\"\u003e+1.5\u003csmall\u003eCM\u003c\/small\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-auth__key\"\u003eCircunferencia media, 16 sem.\u003c\/div\u003e \u003cdiv class=\"ck-auth__src\"\u003eMansell et al., 2005\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-auth__stat\"\u003e \u003cdiv class=\"ck-auth__val\"\u003e+2.3\u003csmall\u003eCM\u003c\/small\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-auth__key\"\u003eAumento individual máximo\u003c\/div\u003e \u003cdiv class=\"ck-auth__src\"\u003eSnarr et al., 2017\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-auth__stat\"\u003e \u003cdiv class=\"ck-auth__val\"\u003e3\u003csmall\u003e×\/SEM\u003c\/small\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-auth__key\"\u003eFrecuencia semanal del estudio\u003c\/div\u003e \u003cdiv class=\"ck-auth__src\"\u003eMurlok 2012 · Harput 2014\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec\" aria-label=\"PRO frente a MAX\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eElige tu modelo\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003ePRO frente a MAX\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp\"\u003e \u003cdiv class=\"ck-cmp__row ck-cmp__row--head\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eComparación\u003c\/div\u003e \u003cdiv class=\"ck-cmp__prod ck-cmp__cell--sel\"\u003e \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/pro_68b5b325-408b-426a-b9fa-0766a9a6ecf7.jpg?v=1764502146\" alt=\"EZ-NECK PRO\"\u003e \u003cdiv\u003e\n\u003cdiv class=\"ck-cmp__name\"\u003ePRO\u003c\/div\u003e\n\u003cdiv class=\"ck-cmp__price\"\u003e$49 · Mejor relación calidad-precio\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__prod\"\u003e \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/max_88e6e0e7-3d33-427b-bc36-30c712203627.jpg?v=1764502136\" alt=\"EZ-NECK MAX\"\u003e \u003cdiv\u003e\n\u003cdiv class=\"ck-cmp__name\"\u003eMAX\u003c\/div\u003e\n\u003cdiv class=\"ck-cmp__price\"\u003e$129 · Uso intensivo\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__row\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eMaterial\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v ck-cmp__cell--sel\"\u003ePolímero DURACORE™\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v\"\u003eAleación de aluminio\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__row\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eCapacidad de carga\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v ck-cmp__cell--sel\"\u003e100 lb \/ 45 kg\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v\"\u003e200 lb \/ 90 kg\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__row\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eAcolchado\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v ck-cmp__cell--sel\"\u003e20 mm\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v\"\u003e25 mm\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__row\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eLongitud de la manga\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v ck-cmp__cell--sel\"\u003e9,5 cm\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--v\"\u003e9,5 cm\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-cmp__row\"\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--k\"\u003eIdeal para\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell ck-cmp__cell--sel\" style=\"font-size:13px;\"\u003ePrincipiantes y viajes\u003c\/div\u003e \u003cdiv class=\"ck-cmp__cell\" style=\"font-size:13px;\"\u003eAtletas serios\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-cap\" aria-label=\"Ejercicios\" id=\"ck-exercises\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eEntrenamiento\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003e3 ejercicios. Resultados completos.\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003eTrabaja el cuello desde todos los ángulos para desarrollar un cuello fuerte, resistente y blindado.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-tabs__nav\" role=\"tablist\" aria-label=\"Ejercicios de cuello\"\u003e \u003cbutton class=\"ck-tab\" role=\"tab\" aria-selected=\"true\" data-tab=\"0\"\u003eCurls de cuello\u003c\/button\u003e \u003cbutton class=\"ck-tab\" role=\"tab\" aria-selected=\"false\" data-tab=\"1\"\u003eExtensiones de cuello\u003c\/button\u003e \u003cbutton class=\"ck-tab\" role=\"tab\" aria-selected=\"false\" data-tab=\"2\"\u003eCurls laterales de cuello\u003c\/button\u003e \u003c\/div\u003e \u003cdiv class=\"ck-tabpanel is-active\" role=\"tabpanel\" data-panel=\"0\"\u003e \u003cdiv class=\"ck-tabpanel__media\"\u003e\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/neck-curl-short.gif?v=1761760637\" alt=\"Curls de cuello con EZ-NECK\"\u003e\u003c\/div\u003e \u003cdiv\u003e \u003ch3 class=\"ck-tabpanel__name\"\u003eCurls de cuello\u003c\/h3\u003e \u003cp class=\"ck-tabpanel__desc\"\u003eFortalece los músculos frontales del cuello para mejorar la estabilidad de la cabeza y la postura.\u003c\/p\u003e \u003cdiv class=\"ck-tabpanel__meta\"\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eSeries\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e8–12\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eRepeticiones\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-tabpanel\" role=\"tabpanel\" data-panel=\"1\"\u003e \u003cdiv class=\"ck-tabpanel__media\"\u003e\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/neck-extension.gif?v=1761760636\" alt=\"Extensiones de cuello con EZ-NECK\"\u003e\u003c\/div\u003e \u003cdiv\u003e \u003ch3 class=\"ck-tabpanel__name\"\u003eExtensiones de cuello\u003c\/h3\u003e \u003cp class=\"ck-tabpanel__desc\"\u003eDesarrolla la fuerza de la parte posterior del cuello para prevenir lesiones y mejorar el rendimiento deportivo.\u003c\/p\u003e \u003cdiv class=\"ck-tabpanel__meta\"\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eSeries\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e8–15\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eRepeticiones\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-tabpanel\" role=\"tabpanel\" data-panel=\"2\"\u003e \u003cdiv class=\"ck-tabpanel__media\"\u003e\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/side-neck-curl.gif?v=1761760669\" alt=\"Curls laterales de cuello con EZ-NECK\"\u003e\u003c\/div\u003e \u003cdiv\u003e \u003ch3 class=\"ck-tabpanel__name\"\u003eCurls laterales de cuello\u003c\/h3\u003e \u003cp class=\"ck-tabpanel__desc\"\u003eTrabaja los músculos laterales del cuello para lograr un desarrollo completo de 360 grados.\u003c\/p\u003e \u003cdiv class=\"ck-tabpanel__meta\"\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eSeries\u003c\/div\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-tabpanel__stat\"\u003e\n\u003cdiv class=\"ck-tabpanel__statv\"\u003e10–15\u003c\/div\u003e\n\u003cdiv class=\"ck-tabpanel__statk\"\u003eRepeticiones\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-program\" id=\"ck-training-program\" aria-labelledby=\"ck-program-title\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-program__intro\"\u003e \u003cdiv class=\"ck-program__copy\"\u003e \u003cp class=\"ck-program__included\"\u003eValor de $19 · Incluido gratis con PRO o MAX\u003c\/p\u003e \u003ch2 class=\"ck-h2\" id=\"ck-program-title\"\u003eTu entrenador.\u003cbr\u003eTu plan de 12 semanas.\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003eSabrás qué entrenar, con qué frecuencia y cuándo progresar. Tu guía digital de entrenamiento incluida te ofrece un plan semana a semana adaptado a tu experiencia entrenando el cuello.\u003c\/p\u003e \u003c\/div\u003e \u003cfigure class=\"ck-program__book\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/ez-neck-12-week-training-program.png?v=1788903876\" alt=\"Maqueta de un libro delgado de la guía digital de entrenamiento de 12 semanas Fundamentos de la fuerza del cuello de KENSUI\" width=\"1254\" height=\"1254\" loading=\"lazy\" decoding=\"async\"\u003e \u003cfigcaption\u003eGuía digital incluida. El libro se muestra con fines ilustrativos.\u003c\/figcaption\u003e \u003c\/figure\u003e \u003cul class=\"ck-program__list\" aria-label=\"Contenido de la guía de entrenamiento\"\u003e \u003cli\u003ePlanes de 12 semanas con series y repeticiones\u003c\/li\u003e \u003cli\u003eFotos de los ejercicios y consejos técnicos\u003c\/li\u003e \u003cli\u003eIndicaciones claras para añadir resistencia y recuperarte\u003c\/li\u003e \u003cli\u003eCalendario imprimible y registros de sesiones\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003cdiv class=\"ck-program__tracks\"\u003e \u003cdiv class=\"ck-program__track\"\u003e \u003cp class=\"ck-program__level\"\u003ePLAN 01\u003c\/p\u003e \u003ch3 class=\"ck-program__name\"\u003ePrincipiante\u003c\/h3\u003e \u003cp class=\"ck-program__desc\"\u003e¿Es la primera vez que entrenas directamente el cuello? Familiarízate con el movimiento y el control mediante dos sesiones semanales.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-program__track\"\u003e \u003cp class=\"ck-program__level\"\u003ePLAN 02\u003c\/p\u003e \u003ch3 class=\"ck-program__name\"\u003eIntermedio\u003c\/h3\u003e \u003cp class=\"ck-program__desc\"\u003e¿Ya entrenas el cuello con constancia? Aumenta gradualmente el volumen sobre una base consolidada.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-program__track\"\u003e \u003cp class=\"ck-program__level\"\u003ePLAN 03\u003c\/p\u003e \u003ch3 class=\"ck-program__name\"\u003eAvanzado\u003c\/h3\u003e \u003cp class=\"ck-program__desc\"\u003e¿Tienes experiencia entrenando directamente el cuello? Perfecciona tu progresión e incorpora una sesión ligera opcional cuando la recuperación lo permita.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp class=\"ck-program__note\"\u003eElige tu plan según tu experiencia entrenando directamente el cuello. La experiencia general en el gimnasio no determina tu nivel.\u003c\/p\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec\" aria-label=\"Descripción general del producto\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\" style=\"margin-bottom:0;\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eMira\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003eDescripción general del producto\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003eDescubre cómo EZ-NECK transforma tu entrenamiento de cuello en cuestión de minutos.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-video__wrap\"\u003e \u003cscript src=\"https:\/\/fast.wistia.com\/embed\/medias\/trluc41tyu.jsonp\" async\u003e\u003c\/script\u003e\u003cscript src=\"https:\/\/fast.wistia.com\/assets\/external\/E-v1.js\" async\u003e\u003c\/script\u003e\u003cdiv class=\"wistia_responsive_padding\" style=\"padding:56.25% 0 0 0;position:relative;\"\u003e\u003cdiv class=\"wistia_responsive_wrapper\" style=\"height:100%;left:0;position:absolute;top:0;width:100%;\"\u003e\u003cdiv class=\"wistia_embed wistia_async_trluc41tyu seo=true videoFoam=true\" style=\"height:100%;position:relative;width:100%\"\u003e\u003cdiv class=\"wistia_swatch\" style=\"height:100%;left:0;opacity:0;overflow:hidden;position:absolute;top:0;transition:opacity 200ms;width:100%;\"\u003e\u003cimg src=\"https:\/\/fast.wistia.com\/embed\/medias\/trluc41tyu\/swatch\" style=\"filter:blur(5px);height:100%;object-fit:contain;width:100%;\" alt=\"\" aria-hidden=\"true\" onload=\"this.parentNode.style.opacity=1;\"\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-hub\"\u003e \u003cp class=\"ck-hub__quote\"\u003e “Tener un cuello fuerte, ¿por qué es tan importante? Porque quieres una columna fuerte, y el cuello es la parte superior de la columna. Entrenar el cuello cambia por completo mi psicología… \u003cem\u003ede forma natural, me mantengo más erguido.\u003c\/em\u003e” \u003c\/p\u003e \u003cdiv class=\"ck-hub__cite\"\u003eAndrew Huberman — Neurocientífico, profesor de Stanford\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-cap\" aria-label=\"Estudio sobre el atractivo\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eEstudio de Photofeeler.com\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003eUn cuello fuerte es más estético\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003eLa misma persona, la misma foto, la misma iluminación: solo cambió el cuello. Evaluación en la categoría de citas por mujeres de 18 a 29 años, 20 votos por imagen.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-study__grid\"\u003e \u003cdiv class=\"ck-study__card\"\u003e \u003cdiv class=\"ck-study__label\"\u003e\n\u003cspan\u003eSujeto 1\u003c\/span\u003e\u003cspan\u003e20 votos cada una\u003c\/span\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-study__imgs\"\u003e \u003cdiv class=\"ck-study__imgcard\"\u003e\n\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/b1.jpg?v=1765214343\" alt=\"Sujeto 1 antes\"\u003e\u003cspan class=\"ck-study__tag ck-study__tag--before\"\u003eAntes\u003c\/span\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-study__imgcard\"\u003e\n\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/a1.jpg?v=1765214343\" alt=\"Sujeto 1 después\"\u003e\u003cspan class=\"ck-study__tag ck-study__tag--after\"\u003eDespués\u003c\/span\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-study__delta\"\u003e \u003cspan class=\"ck-study__deltak\"\u003eCalificado como atractivo: 38 % → 73 %\u003c\/span\u003e \u003cspan class=\"ck-study__deltav\"\u003e+35 %\u003c\/span\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-study__card\"\u003e \u003cdiv class=\"ck-study__label\"\u003e\n\u003cspan\u003eSujeto 2\u003c\/span\u003e\u003cspan\u003e20 votos cada una\u003c\/span\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-study__imgs\"\u003e \u003cdiv class=\"ck-study__imgcard\"\u003e\n\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/b2.jpg?v=1765214343\" alt=\"Sujeto 2 antes\"\u003e\u003cspan class=\"ck-study__tag ck-study__tag--before\"\u003eAntes\u003c\/span\u003e\n\u003c\/div\u003e \u003cdiv class=\"ck-study__imgcard\"\u003e\n\u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0229\/1249\/9792\/files\/a2.jpg?v=1765214343\" alt=\"Sujeto 2 después\"\u003e\u003cspan class=\"ck-study__tag ck-study__tag--after\"\u003eDespués\u003c\/span\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-study__delta\"\u003e \u003cspan class=\"ck-study__deltak\"\u003eCalificado como atractivo: 67 % → 78 %\u003c\/span\u003e \u003cspan class=\"ck-study__deltav\"\u003e+11 %\u003c\/span\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp class=\"ck-study__method\"\u003e \u003cb\u003eMétodo:\u003c\/b\u003e probamos la hipótesis en \u003ca href=\"https:\/\/photofeeler.com\" target=\"_blank\" rel=\"noopener\"\u003ePhotofeeler.com\u003c\/a\u003e, un sitio de evaluación del atractivo, manteniendo \u003cb\u003etodos los factores constantes salvo el cuello\u003c\/b\u003e. El tamaño del cuello se relaciona con una menor probabilidad de lesiones, y la salud se relaciona con el atractivo. \u003c\/p\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-yt\" aria-label=\"Reseñas en video\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eReseñas en video\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003eLo que dicen los clientes\u003c\/h2\u003e \u003c\/div\u003e \u003cdiv class=\"ck-yt__grid\"\u003e \u003cdiv class=\"ck-yt__card\"\u003e \u003cdiv class=\"ck-yt__frame\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/JGZQAaeTdwU\" title=\"Reseña de Kensui EZ-NECK\" loading=\"lazy\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e \u003cdiv class=\"ck-yt__title\"\u003eReseña de Kensui EZ-NECK — No volverán a llamarte “cuello de lápiz”\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-yt__card\"\u003e \u003cdiv class=\"ck-yt__frame\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xMay-UUCTa0\" title=\"Demostración de entrenamiento en casa con EZ-NECK\" loading=\"lazy\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e \u003cdiv class=\"ck-yt__title\"\u003eCómo entreno el cuello en casa — Demostración completa\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-yt__card\"\u003e \u003cdiv class=\"ck-yt__frame\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/cnkjX7Wh1Ys\" title=\"Desarrolla un cuello musculoso con EZ-NECK\" loading=\"lazy\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e \u003cdiv class=\"ck-yt__title\"\u003eDesarrolla un cuello musculoso — Guía completa\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec\" aria-label=\"Entrenamiento del cuello a través de la historia\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-sechead ck-sechead--center\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eA través de los tiempos\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003eEl antiguo arte de entrenar el cuello\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003eDurante miles de años, guerreros y atletas han conocido la importancia de un cuello fuerte.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-time__list\"\u003e \u003cdiv class=\"ck-time__item\"\u003e \u003cdiv class=\"ck-time__era\"\u003eAntigua Grecia\u003c\/div\u003e \u003cp class=\"ck-time__quote\"\u003e“El cuello debe entrenarse para soportar la tensión, igual que los hombros.”\u003c\/p\u003e \u003cdiv class=\"ck-time__src\"\u003e— Filóstrato\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-time__item\"\u003e \u003cdiv class=\"ck-time__era\"\u003eAntigua India\u003c\/div\u003e \u003cp class=\"ck-time__quote\"\u003e“La fuerza de un luchador reside en el cuello.”\u003c\/p\u003e \u003cdiv class=\"ck-time__src\"\u003e— Proverbio del akhara\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-time__item\"\u003e \u003cdiv class=\"ck-time__era\"\u003eAntiguo Egipto\u003c\/div\u003e \u003cp class=\"ck-time__quote\"\u003e“La fuerza está en la columna y el cuello de quien carga.”\u003c\/p\u003e \u003cdiv class=\"ck-time__src\"\u003e— Deir el-Medina\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-time__item\"\u003e \u003cdiv class=\"ck-time__era\"\u003eJapón feudal\u003c\/div\u003e \u003cp class=\"ck-time__quote\"\u003e“El guerrero debe mantener firme el cuello.”\u003c\/p\u003e \u003cdiv class=\"ck-time__src\"\u003e— Bansenshukai\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-time__item\"\u003e \u003cdiv class=\"ck-time__era\"\u003eAntigua Roma\u003c\/div\u003e \u003cp class=\"ck-time__quote\"\u003e“El peso del casco convierte el cuello en hierro.”\u003c\/p\u003e \u003cdiv class=\"ck-time__src\"\u003e— Fragmento del Ludus Magnus\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-cap\" aria-label=\"Preguntas frecuentes\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-faq__grid\"\u003e \u003cdiv\u003e \u003cdiv class=\"ck-eyebrow\"\u003eAyuda\u003c\/div\u003e \u003ch2 class=\"ck-h2\"\u003ePreguntas frecuentes sobre EZ-NECK™\u003c\/h2\u003e \u003cp class=\"ck-subline\"\u003e¿No encuentras lo que necesitas? Escribe a support@kensui.com.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__list\" id=\"ck-faq-list\"\u003e \u003cdiv class=\"ck-faq__item is-open\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"true\"\u003e \u003cspan\u003e¿Realmente funciona entrenar el cuello?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eSí; estos son los estudios.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMurlok et al. (2012)\u003c\/strong\u003e — 8 semanas de entrenamiento de resistencia específico para el cuello, 3 veces por semana: aumento medio de 1,1 cm (0,43″) en la circunferencia del cuello.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMansell et al. (2005)\u003c\/strong\u003e — 16 semanas, 2 veces por semana: aumento medio de 1,5 cm (0,59″).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHarput et al. (2014)\u003c\/strong\u003e — 8 semanas, 3 veces por semana: aumento medio de 1,2 cm (0,47″).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSnarr et al. (2017)\u003c\/strong\u003e — 24 participantes: aumento individual máximo de 2,3 cm (0,9″).\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__item\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"false\"\u003e \u003cspan\u003e¿Con qué frecuencia debo entrenar?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eEmpieza con dos sesiones por semana, separadas por al menos 48 horas. Las personas con experiencia entrenando el cuello pueden añadir una sesión ligera opcional si se recuperan cómodamente. Espera a que desaparezcan las agujetas y recuperes el movimiento normal antes de volver a entrenar.\u003c\/p\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__item\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"false\"\u003e \u003cspan\u003e¿Es seguro? ¿Existen riesgos?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eAunque entrenar el cuello suele ser seguro cuando se hace correctamente, existe riesgo de lesión si los ejercicios se realizan de forma inadecuada. Usa una técnica correcta y considera consultar a un profesional.\u003c\/p\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__item\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"false\"\u003e \u003cspan\u003e¿Cuál es el espacio de carga del EZ-NECK?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eDispone de 8,5 cm (3,2″) de espacio de carga.\u003c\/p\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__item\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"false\"\u003e \u003cspan\u003e¿Se incluyen los discos?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eLos discos de pesas no están incluidos. Este dispositivo es compatible con cualquier disco, así que si entrenas en un gimnasio o ya tienes discos, puedes empezar de inmediato. Si no tienes ninguno, \u003ca href=\"\/es\/collections\/weight-plates\"\u003eaquí vendemos discos de pesas\u003c\/a\u003e.\u003c\/p\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"ck-faq__item\"\u003e \u003cbutton type=\"button\" class=\"ck-faq__q\" aria-expanded=\"false\"\u003e \u003cspan\u003e¿Funciona con todos los discos de pesas?\u003c\/span\u003e \u003cspan class=\"ck-faq__plus\" aria-hidden=\"true\"\u003e\u003c\/span\u003e \u003c\/button\u003e \u003cdiv class=\"ck-faq__a\"\u003e\u003cdiv class=\"ck-faq__a-inner\"\u003e \u003cp\u003eSí, EZ-NECK™ es compatible con discos estándar y olímpicos. Para los discos estándar necesitarás comprar los adaptadores para discos estándar, que se venden por separado.\u003c\/p\u003e \u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"ck-sec ck-final\" id=\"ck-final\" aria-label=\"Garantía\"\u003e \u003cdiv class=\"ck-w\"\u003e \u003cdiv class=\"ck-eyebrow\"\u003eGarantía de 100 días\u003c\/div\u003e \u003ch2 class=\"ck-final__title\"\u003eEntrénalo durante 100 días\u003c\/h2\u003e \u003cp class=\"ck-final__sub\"\u003eSiente la diferencia en fuerza y postura, o devuélvelo. Todos los pedidos están cubiertos por la prueba completa sin riesgo.\u003c\/p\u003e \u003cbutton type=\"button\" class=\"ck-final__btn\" data-scroll-buybox\u003e \u003cspan class=\"ezn-cta__main\"\u003eAñadir al carrito — \u003cspan class=\"ezn-cta__price\" data-ck-price\u003e$49\u003c\/span\u003e\u003c\/span\u003e \u003cspan class=\"ezn-cta__sub\"\u003ePrueba sin riesgo de 100 días · devoluciones gratuitas\u003c\/span\u003e \u003c\/button\u003e \u003cul class=\"ck-final__points\"\u003e \u003cli\u003eCapacidad de hasta 200 lb\u003c\/li\u003e \u003cli\u003eMovimientos en 4 direcciones\u003c\/li\u003e \u003cli\u003eCompatible con cualquier disco\u003c\/li\u003e \u003cli\u003eSe envía en 24 horas\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/section\u003e \u003cdiv class=\"ck-sticky\" id=\"ck-sticky\" aria-hidden=\"true\"\u003e \u003cdiv class=\"ck-sticky__row\"\u003e \u003cdiv class=\"ck-sticky__name\"\u003e\n\u003cspan\u003eEZ-NECK™ \u003cspan id=\"ck-sticky-model\"\u003ePRO\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"ck-sticky__price\" data-ck-price\u003e$49\u003c\/span\u003e\n\u003c\/div\u003e \u003cbutton type=\"button\" class=\"ck-sticky__btn\" data-scroll-buybox\u003eAñadir al carrito\u003c\/button\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cscript\u003e\n(function () {\n  var root = document.querySelector('.ck-hero[data-product-handle]');\n  if (!root) return;\n\n  var KLAVIYO_PUBLIC_KEY = 'QeupfE';\n\n  \/\/ --- Currency-aware price rendering (Shopify Markets) ---\n  var CURRENCY_LOCALE = {\n    USD: 'en-US', CAD: 'en-CA', AUD: 'en-AU', NZD: 'en-NZ',\n    GBP: 'en-GB', EUR: 'de-DE', CHF: 'de-CH', SEK: 'sv-SE',\n    NOK: 'nb-NO', DKK: 'da-DK', PLN: 'pl-PL', CZK: 'cs-CZ',\n    HUF: 'hu-HU', RON: 'ro-RO', RSD: 'sr-RS', ISK: 'is-IS',\n    JPY: 'ja-JP', MYR: 'ms-MY', THB: 'th-TH', SGD: 'en-SG',\n    HKD: 'en-HK', KRW: 'ko-KR', INR: 'en-IN', MXN: 'es-MX'\n  };\n  var ZERO_DECIMAL_CURRENCIES = {\n    JPY: 1, KRW: 1, VND: 1, CLP: 1, ISK: 1, HUF: 1, TWD: 1, XOF: 1, XAF: 1\n  };\n\n  function getCurrencyCode() {\n    if (window.Shopify \u0026\u0026 window.Shopify.currency \u0026\u0026 window.Shopify.currency.active) return window.Shopify.currency.active;\n    return 'USD';\n  }\n\n  function formatPrice(priceCents) {\n    var code = getCurrencyCode();\n    var locale = CURRENCY_LOCALE[code] || 'en-US';\n    var zeroDecimal = !!ZERO_DECIMAL_CURRENCIES[code];\n    var amount = (priceCents || 0) \/ 100;\n    try {\n      return new Intl.NumberFormat(locale, {\n        style: 'currency', currency: code,\n        minimumFractionDigits: 0,\n        maximumFractionDigits: zeroDecimal ? 0 : 2\n      }).format(amount);\n    } catch (e) {\n      return (zeroDecimal ? String(Math.round(amount)) : '$' + amount.toFixed(2));\n    }\n  }\n  function formatPriceCompact(priceCents) { return formatPrice(priceCents); }\n\n  function setText(selector, value) {\n    var el = root.querySelector(selector);\n    if (el) el.textContent = value;\n  }\n\n  function updatePriceDisplays(priceCents) {\n    var full = formatPrice(priceCents);\n    setText('#ezn-price', full);\n    setText('#ezn-installment', formatPrice(priceCents \/ 4));\n    setText('#ezn-cta-price', full);\n    \/\/ Mirror into final CTA + sticky bar\n    document.querySelectorAll('[data-ck-price]').forEach(function (el) { el.textContent = full; });\n  }\n\n  function updateAllTierPrices() {\n    root.querySelectorAll('.ezn-tier').forEach(function (tier) {\n      var cents = parseInt(tier.getAttribute('data-price'), 10);\n      if (isNaN(cents)) return;\n      var el = tier.querySelector('[data-tier-price]');\n      if (el) el.textContent = formatPriceCompact(cents);\n    });\n  }\n\n  \/\/ --- Ship destination: ISO country code + emoji flag ---\n  function flagEmoji(code) {\n    if (!code || code.length !== 2) return '';\n    var A = 0x1F1E6;\n    var c = code.toUpperCase();\n    var a = c.charCodeAt(0), b = c.charCodeAt(1);\n    if (a \u003c 65 || a \u003e 90 || b \u003c 65 || b \u003e 90) return '';\n    return String.fromCodePoint(A + (a - 65), A + (b - 65));\n  }\n  function getCountryCode() {\n    if (window.Shopify \u0026\u0026 window.Shopify.country) return String(window.Shopify.country).toUpperCase();\n    var loc = (navigator.language || '').split('-')[1];\n    return loc ? loc.toUpperCase() : '';\n  }\n  function updateShipDestination() {\n    var dest = root.querySelector('#ezn-ship-dest');\n    if (!dest) return;\n    var code = getCountryCode();\n    if (code.length !== 2) { dest.textContent = ''; return; }\n    var flag = flagEmoji(code);\n    dest.textContent = ' a ' + code + (flag ? ' ' + flag : '');\n  }\n\n  \/\/ --- Gallery ---\n  var track = root.querySelector('#ezn-gallery-track');\n  var slides = track ? track.querySelectorAll('.ezn-gallery__slide') : [];\n  var prevBtn = root.querySelector('.ezn-gallery__arrow--prev');\n  var nextBtn = root.querySelector('.ezn-gallery__arrow--next');\n  var counter = root.querySelector('#ezn-gallery-counter');\n  var thumbsEl = root.querySelector('#ezn-gallery-thumbs');\n  var currentIndex = 0;\n\n  if (counter \u0026\u0026 slides.length) counter.textContent = '1 \/ ' + slides.length;\n\n  function findSlideIndexByImage(url) {\n    if (!url || !slides.length) return -1;\n    var target = url.split('?')[0].toLowerCase();\n    for (var i = 0; i \u003c slides.length; i++) {\n      var img = slides[i].querySelector('img');\n      if (!img || !img.src) continue;\n      var src = img.src.split('?')[0].toLowerCase();\n      if (src === target) return i;\n      var srcFile = src.substring(src.lastIndexOf('\/') + 1);\n      var targetFile = target.substring(target.lastIndexOf('\/') + 1);\n      if (srcFile \u0026\u0026 targetFile \u0026\u0026 srcFile === targetFile) return i;\n    }\n    return -1;\n  }\n\n  if (thumbsEl \u0026\u0026 slides.length) {\n    for (var i = 0; i \u003c slides.length; i++) {\n      var slideImg = slides[i].querySelector('img');\n      var rawSrc = slideImg ? slideImg.src : '';\n      var thumbSrc = rawSrc;\n      if (rawSrc \u0026\u0026 rawSrc.indexOf('.gif') === -1) {\n        thumbSrc = rawSrc.replace(\/\u0026width=\\d+\/, '\u0026width=160');\n      }\n      var btn = document.createElement('button');\n      btn.type = 'button';\n      btn.className = 'ezn-gallery__thumb';\n      btn.setAttribute('role', 'tab');\n      btn.setAttribute('aria-label', 'Ir a la imagen ' + (i + 1));\n      btn.setAttribute('aria-current', i === 0 ? 'true' : 'false');\n      btn.setAttribute('data-index', i);\n      btn.innerHTML = '\u003cimg src=\"' + thumbSrc + '\" alt=\"\" loading=\"lazy\" width=\"160\" height=\"160\"\u003e';\n      thumbsEl.appendChild(btn);\n    }\n  }\n  var thumbs = thumbsEl ? thumbsEl.querySelectorAll('.ezn-gallery__thumb') : [];\n\n  function goToSlide(index) {\n    if (!track || !slides.length) return;\n    index = Math.max(0, Math.min(slides.length - 1, index));\n    currentIndex = index;\n    track.scrollTo({ left: slides[index].offsetLeft, behavior: 'smooth' });\n    updateSliderUI();\n  }\n  function updateSliderUI() {\n    if (counter) counter.textContent = (currentIndex + 1) + ' \/ ' + slides.length;\n    thumbs.forEach(function (t, i) { t.setAttribute('aria-current', i === currentIndex ? 'true' : 'false'); });\n    if (prevBtn) prevBtn.disabled = currentIndex === 0;\n    if (nextBtn) nextBtn.disabled = currentIndex === slides.length - 1;\n    if (thumbsEl \u0026\u0026 thumbs[currentIndex]) {\n      var t = thumbs[currentIndex];\n      var stripRect = thumbsEl.getBoundingClientRect();\n      var thumbRect = t.getBoundingClientRect();\n      if (thumbRect.left \u003c stripRect.left || thumbRect.right \u003e stripRect.right) {\n        thumbsEl.scrollTo({ left: t.offsetLeft - thumbsEl.clientWidth \/ 2 + t.clientWidth \/ 2, behavior: 'smooth' });\n      }\n    }\n  }\n  if (prevBtn) prevBtn.addEventListener('click', function () { goToSlide(currentIndex - 1); });\n  if (nextBtn) nextBtn.addEventListener('click', function () { goToSlide(currentIndex + 1); });\n  thumbs.forEach(function (t) {\n    t.addEventListener('click', function () { goToSlide(parseInt(t.getAttribute('data-index'), 10)); });\n  });\n  if (track) {\n    var scrollTimer;\n    track.addEventListener('scroll', function () {\n      clearTimeout(scrollTimer);\n      scrollTimer = setTimeout(function () {\n        var idx = Math.round(track.scrollLeft \/ track.clientWidth);\n        if (idx !== currentIndex) { currentIndex = idx; updateSliderUI(); }\n      }, 80);\n    });\n  }\n  updateSliderUI();\n  updateShipDestination();\n\n  \/\/ --- Tier selection (PRO \/ MAX) ---\n  var tiers = root.querySelectorAll('.ezn-tier');\n  var selected = root.querySelector('.ezn-tier[aria-pressed=\"true\"]') || tiers[0];\n\n  function applySelection(tier) {\n    if (!tier) return;\n    tiers.forEach(function (c) { c.setAttribute('aria-pressed', 'false'); });\n    tier.setAttribute('aria-pressed', 'true');\n    selected = tier;\n\n    var id = tier.getAttribute('data-variant-id');\n    var img = tier.getAttribute('data-image');\n    var priceCents = parseInt(tier.getAttribute('data-price'), 10);\n    var name = tier.getAttribute('data-name') || '';\n\n    var modelBadge = root.querySelector('.ezn-gallery__model');\n    if (modelBadge) modelBadge.textContent = name;\n    var stickyModel = document.getElementById('ck-sticky-model');\n    if (stickyModel) stickyModel.textContent = name;\n\n    var cartInput = root.querySelector('#ezn-cart-variant');\n    if (cartInput) cartInput.value = id;\n    var notifyInput = root.querySelector('#ezn-notify-variant');\n    if (notifyInput) notifyInput.value = id;\n\n    if (img) {\n      var idx = findSlideIndexByImage(img);\n      if (idx !== -1) goToSlide(idx);\n    }\n\n    var available = tier.getAttribute('data-available') !== 'false';\n    root.setAttribute('data-stock', available ? 'in' : 'out');\n\n    if (priceCents) updatePriceDisplays(priceCents);\n  }\n\n  tiers.forEach(function (c) {\n    c.addEventListener('click', function () { applySelection(c); });\n  });\n\n  updateAllTierPrices();\n  applySelection(selected);\n\n  \/\/ --- Live Shopify product fetch ---\n  var handle = root.getAttribute('data-product-handle');\n  fetch('\/products\/' + handle + '.js', { headers: { 'Accept': 'application\/json' } })\n    .then(function (r) { return r.ok ? r.json() : null; })\n    .then(function (data) {\n      if (!data || !data.variants) return;\n      tiers.forEach(function (tier) {\n        var wantId = tier.getAttribute('data-variant-id');\n        var match = data.variants.find(function (v) { return String(v.id) === wantId; });\n        if (match) {\n          tier.setAttribute('data-price', match.price);\n          tier.setAttribute('data-available', match.available ? 'true' : 'false');\n        }\n      });\n      updateAllTierPrices();\n      applySelection(selected);\n    })\n    .catch(function () {});\n\n  document.addEventListener('currency:changed', function () {\n    if (selected) applySelection(selected);\n    updateAllTierPrices();\n    updateShipDestination();\n  });\n\n  \/\/ --- Exercise tabs ---\n  var tabWrap = document.getElementById('ck-exercises');\n  if (tabWrap) {\n    var tabBtns = tabWrap.querySelectorAll('.ck-tab');\n    var panels = tabWrap.querySelectorAll('.ck-tabpanel');\n    tabBtns.forEach(function (btn) {\n      btn.addEventListener('click', function () {\n        var idx = btn.getAttribute('data-tab');\n        tabBtns.forEach(function (b) { b.setAttribute('aria-selected', b === btn ? 'true' : 'false'); });\n        panels.forEach(function (p) { p.classList.toggle('is-active', p.getAttribute('data-panel') === idx); });\n      });\n    });\n  }\n\n  \/\/ --- FAQ accordion (single-open, first open by default) ---\n  var faqItems = document.querySelectorAll('#ck-faq-list .ck-faq__item');\n  faqItems.forEach(function (item) {\n    var btn = item.querySelector('.ck-faq__q');\n    if (!btn) return;\n    btn.addEventListener('click', function () {\n      var wasOpen = item.classList.contains('is-open');\n      faqItems.forEach(function (other) {\n        other.classList.remove('is-open');\n        var b = other.querySelector('.ck-faq__q');\n        if (b) b.setAttribute('aria-expanded', 'false');\n      });\n      if (!wasOpen) {\n        item.classList.add('is-open');\n        btn.setAttribute('aria-expanded', 'true');\n      }\n    });\n  });\n  \/\/ Ensure default-open item animates open correctly\n  var firstOpen = document.querySelector('#ck-faq-list .ck-faq__item.is-open .ck-faq__a');\n  if (firstOpen) firstOpen.style.maxHeight = '1200px';\n\n  \/\/ --- Sticky bar: show after buy box scrolls out, hide at final CTA ---\n  var sticky = document.getElementById('ck-sticky');\n  var buybox = document.getElementById('ezn-buybox');\n  var finalSec = document.getElementById('ck-final');\n  if (sticky \u0026\u0026 buybox \u0026\u0026 'IntersectionObserver' in window) {\n    var buyVisible = true, finalVisible = false;\n    function updateSticky() {\n      var show = !buyVisible \u0026\u0026 !finalVisible \u0026\u0026 root.getAttribute('data-stock') === 'in';\n      sticky.classList.toggle('is-visible', show);\n      sticky.setAttribute('aria-hidden', show ? 'false' : 'true');\n    }\n    new IntersectionObserver(function (entries) {\n      buyVisible = entries[0].isIntersecting; updateSticky();\n    }, { rootMargin: '0px 0px -60px 0px' }).observe(buybox);\n    if (finalSec) {\n      new IntersectionObserver(function (entries) {\n        finalVisible = entries[0].isIntersecting; updateSticky();\n      }).observe(finalSec);\n    }\n  }\n  document.querySelectorAll('[data-scroll-buybox]').forEach(function (btn) {\n    btn.addEventListener('click', function () {\n      buybox.scrollIntoView({ behavior: 'smooth', block: 'center' });\n    });\n  });\n\n  \/\/ --- Klaviyo back-in-stock ---\n  var form = root.querySelector('#ezn-notify-form');\n  if (!form) return;\n\n  form.addEventListener('submit', function (e) {\n    e.preventDefault();\n    var emailInput = form.querySelector('input[name=\"contact[email]\"]');\n    var variantInput = form.querySelector('input[name=\"variant_id\"]');\n    var btn = form.querySelector('.ezn-notify__btn');\n    var btnLabel = form.querySelector('.ezn-notify__btn-label');\n    var email = (emailInput.value || '').trim();\n    var variantId = (variantInput.value || '').trim();\n\n    if (!email || !variantId) { form.setAttribute('data-state', 'error'); return; }\n\n    btn.disabled = true;\n    var originalLabel = btnLabel.textContent;\n    btnLabel.textContent = 'Enviando…';\n    form.removeAttribute('data-state');\n\n    var payload = {\n      data: {\n        type: 'back-in-stock-subscription',\n        attributes: {\n          profile: { data: { type: 'profile', attributes: { email: email } } },\n          channels: ['EMAIL']\n        },\n        relationships: {\n          variant: { data: { type: 'catalog-variant', id: '$shopify:::$default:::' + variantId } }\n        }\n      }\n    };\n\n    fetch('https:\/\/a.klaviyo.com\/client\/back-in-stock-subscriptions\/?company_id=' + KLAVIYO_PUBLIC_KEY, {\n      method: 'POST',\n      headers: { 'Content-Type': 'application\/json', 'revision': '2024-10-15' },\n      body: JSON.stringify(payload)\n    })\n      .then(function (res) {\n        if (res.ok || res.status === 202) {\n          form.setAttribute('data-state', 'success');\n        } else {\n          form.setAttribute('data-state', 'error');\n          btn.disabled = false;\n          btnLabel.textContent = originalLabel;\n        }\n      })\n      .catch(function () {\n        form.setAttribute('data-state', 'error');\n        btn.disabled = false;\n        btnLabel.textContent = originalLabel;\n      });\n  });\n})();\n\u003c\/script\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n      {\n        \n        \"__shgProductInit\": {\n          \"uuid\": \"s-2475a043-6475-4fbd-abb8-fbacaf94743a\",\n          \"platform\": \"shopify\",\n          \"currency\": \"USD\",\n          \"productId\": \"8066497052884\",\n          \"staticVariant\": false,\n          \"hideIfDraft\": false,\n          \n          \n          \n          \n          \n          \n            \"productHandle\": \"ez-neck\",\n            \"productVariantId\": 46187530485972\n          \n        },\n        \"__shgProductCallback\": {\n          \"id\": \"s-2475a043-6475-4fbd-abb8-fbacaf94743a\",\n          \"callback\": {\n            \"cb\": \"box\",\n            \"data\": {\n              \"uuid\": \"s-2475a043-6475-4fbd-abb8-fbacaf94743a\"\n            }\n          }\n        }\n      }\n    \u003c\/script\u003e \u003c\/div\u003e \u003cdiv class=\"shg-c \" id=\"s-5f5e51c6-c758-4dba-b141-ef99f0cc8a2a\"\u003e \u003cdiv class=\"shg-row\" data-col-grid-mode-on=\"\"\u003e \u003cdiv class=\"shg-c-lg-5 shg-c-md-5 shg-c-sm-5 shg-c-xs-12\"\u003e \u003cdiv id=\"s-88da35dc-ace0-4cc1-a39e-2107401b155d-root\"\u003e \u003cdiv class=\"shg-image-margin-container-s-88da35dc-ace0-4cc1-a39e-2107401b155d\" id=\"wrap-s-88da35dc-ace0-4cc1-a39e-2107401b155d\"\u003e \u003cdiv class=\"s-88da35dc-ace0-4cc1-a39e-2107401b155d shg-align-container\"\u003e \u003cdiv class=\"shg-c s-88da35dc-ace0-4cc1-a39e-2107401b155d shogun-image-container shg-align-center\" id=\"s-88da35dc-ace0-4cc1-a39e-2107401b155d\"\u003e \u003cdiv class=\"shg-image-content-wrapper\"\u003e \u003cimg src=\"https:\/\/i.shgcdn.com\/9bfbc038-d74a-4ef4-ac2e-f2633442baa4\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/\" class=\"shogun-image \" decoding=\"async\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n    {\n      \"__shgImageV2Elements\": { \"uuid\": \"s-88da35dc-ace0-4cc1-a39e-2107401b155d\" }\n    }\n  \u003c\/script\u003e \u003c\/div\u003e \u003cdiv class=\"shg-c-lg-7 shg-c-md-7 shg-c-sm-7 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-f8c733a6-dd8b-4b3c-99b8-64f0366c3d4b\" class=\"shg-c shg-align-center\"\u003e \u003cdiv class=\"shogun-heading-component\"\u003e \u003ch2\u003e Funda y acolchado extraíbles \u003c\/h2\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-8a8a5fb7-5ce5-416c-9779-5e33a7f69bfc\" class=\"shg-c shg-align-center\"\u003e \u003cdiv class=\"shogun-heading-component\"\u003e \u003ch3\u003e A pesar de su construcción robusta, el EZ-NECK es sorprendentemente compacto y portátil. \u003cbr\u003e\u003cbr\u003eCon una funda y un acolchado desmontables, es fácil de guardar y transportar, lo que lo convierte en un complemento práctico para llevar al gimnasio.\u003cbr\u003e \u003c\/h3\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-64c65c07-a29c-4291-be1e-a33aececd14a\" class=\"shg-c shg-product rca-product-view \" data-is-product-box=\"true\"\u003e \u003cdiv id=\"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\" class=\"shg-c shg-product rca-product-view \" data-is-product-box=\"true\"\u003e \u003cform action=\"\/cart\/add\" method=\"post\" id=\"s-994baddc-be61-418a-a1f8-51f97fd1bc1d-atc-btn-wrapper\" class=\"shg-product-atc-btn-wrapper rca-add-to-cart-submit shg-align-center\"\u003e \u003ca id=\"s-994baddc-be61-418a-a1f8-51f97fd1bc1d\" class=\"shg-btn shg-cse rca-add-to-cart-submit \"\u003e\u003c\/a\u003e \u003c\/form\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n    {\n      \"__shgProductCallback\": {\n        \"id\": \"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\",\n        \"callback\": {\n          \"cb\": \"addToCart\",\n          \"data\": {\n            \"uuid\": \"s-994baddc-be61-418a-a1f8-51f97fd1bc1d\",\n            \"siteId\": \"d921f9ba-aa7a-4156-9e44-53aad23b56fb\",\n            \"pageId\": \"6571df6acf811200da2c482a\",\n            \"pageVersionId\": \"6aa1a78fab1bdacab4bb4523\",\n            \"parentGroupUuid\": \"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\",\n            \"action\": \"\/cart\/add\",\n            \"behavior\": \"go\",\n            \"buttonText\": \"AÑADIR EZ-NECK MAX\",\n            \"successText\": \"Añadido al carrito\",\n            \"soldOutText\": \"Agotado\",\n            \"unavailableText\": \"No disponible\"\n          }\n        }\n      }\n    }\n  \u003c\/script\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n      {\n        \n        \"__shgProductInit\": {\n          \"uuid\": \"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\",\n          \"platform\": \"shopify\",\n          \"currency\": \"USD\",\n          \"productId\": \"8066497052884\",\n          \"staticVariant\": false,\n          \"hideIfDraft\": false,\n          \n          \n          \n          \n          \n          \n            \"productHandle\": \"ez-neck\",\n            \"productVariantId\": 46187530485972\n          \n        },\n        \"__shgProductCallback\": {\n          \"id\": \"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\",\n          \"callback\": {\n            \"cb\": \"box\",\n            \"data\": {\n              \"uuid\": \"s-8c40d1d7-6d4c-4c9f-81c6-7e5a68b4fe9d\"\n            }\n          }\n        }\n      }\n    \u003c\/script\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n      {\n        \n        \"__shgProductInit\": {\n          \"uuid\": \"s-64c65c07-a29c-4291-be1e-a33aececd14a\",\n          \"platform\": \"shopify\",\n          \"currency\": \"USD\",\n          \"productId\": \"8066497052884\",\n          \"staticVariant\": false,\n          \"hideIfDraft\": false,\n          \n          \n          \n          \n          \n          \n            \"productHandle\": \"ez-neck\",\n            \"productVariantId\": 44165348917460\n          \n        },\n        \"__shgProductCallback\": {\n          \"id\": \"s-64c65c07-a29c-4291-be1e-a33aececd14a\",\n          \"callback\": {\n            \"cb\": \"box\",\n            \"data\": {\n              \"uuid\": \"s-64c65c07-a29c-4291-be1e-a33aececd14a\"\n            }\n          }\n        }\n      }\n    \u003c\/script\u003e \u003c\/div\u003e \u003cdiv id=\"s-958a7efb-b267-4d4f-af0c-ee9f642ffdde-root\"\u003e \u003cdiv class=\"shg-image-margin-container-s-958a7efb-b267-4d4f-af0c-ee9f642ffdde\" id=\"wrap-s-958a7efb-b267-4d4f-af0c-ee9f642ffdde\"\u003e \u003cdiv class=\"s-958a7efb-b267-4d4f-af0c-ee9f642ffdde shg-align-container\"\u003e \u003cdiv class=\"shg-c s-958a7efb-b267-4d4f-af0c-ee9f642ffdde shogun-image-container shg-align-center\" id=\"s-958a7efb-b267-4d4f-af0c-ee9f642ffdde\"\u003e \u003cdiv class=\"shg-image-content-wrapper\"\u003e \u003cimg srcset=\"https:\/\/i.shgcdn.com\/c96d4665-8fd4-46a6-bbfa-92203a9bf611\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/-\/resize\/180x\/ 180w,https:\/\/i.shgcdn.com\/c96d4665-8fd4-46a6-bbfa-92203a9bf611\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/-\/resize\/360x\/ 360w,https:\/\/i.shgcdn.com\/c96d4665-8fd4-46a6-bbfa-92203a9bf611\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/-\/resize\/720x\/ 720w\" sizes=\"100vw\" src=\"https:\/\/i.shgcdn.com\/c96d4665-8fd4-46a6-bbfa-92203a9bf611\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/\" class=\"shogun-image \" decoding=\"async\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n    {\n      \"__shgImageV2Elements\": { \"uuid\": \"s-958a7efb-b267-4d4f-af0c-ee9f642ffdde\" }\n    }\n  \u003c\/script\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"shg-c \" id=\"s-a3e21c66-958d-4610-a98d-513e0b9d1be9\"\u003e \u003cdiv class=\"shg-row\" data-col-grid-mode-on=\"\"\u003e \u003cdiv class=\"shg-c-lg-7 shg-c-md-7 shg-c-sm-7 shg-c-xs-12\"\u003e\n\u003cdiv id=\"s-34c5300e-7dee-41d0-ad49-5f34a1d3c834\" class=\"shg-c shg-align-center\"\u003e \u003cdiv class=\"shogun-heading-component\"\u003e \u003ch2\u003e Asas de agarre seguro \u003c\/h2\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-041275ac-1509-49b1-bc66-73771bc0d76f\" class=\"shg-c shg-align-center\"\u003e \u003cdiv class=\"shogun-heading-component\"\u003e \u003ch3\u003e Para mejorar la estabilidad y el control durante los ejercicios, EZ-NECK incluye asas de diseño ergonómico. \u003cbr\u003e\u003cbr\u003eEstas asas proporcionan un agarre firme que te permite mantener una técnica y una alineación adecuadas durante todo el entrenamiento. \u003c\/h3\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-e78c3cdd-09f5-49c7-927a-6db68b703250\" class=\"shg-c shg-product rca-product-view \" data-is-product-box=\"true\"\u003e \u003cform action=\"\/cart\/add\" method=\"post\" id=\"s-4de4cc63-2a88-48da-91f4-2894ff649e8f-atc-btn-wrapper\" class=\"shg-product-atc-btn-wrapper rca-add-to-cart-submit shg-align-center\"\u003e \u003ca id=\"s-4de4cc63-2a88-48da-91f4-2894ff649e8f\" class=\"shg-btn shg-cse rca-add-to-cart-submit \"\u003e\u003c\/a\u003e \u003c\/form\u003e \u003cscript class=\"__SHG_DATA__\" 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src=\"https:\/\/i.shgcdn.com\/c96d4665-8fd4-46a6-bbfa-92203a9bf611\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/\" class=\"shogun-image \" decoding=\"async\" loading=\"lazy\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n    {\n      \"__shgImageV2Elements\": { \"uuid\": \"s-d49a4f77-e543-4b49-9fde-d0bba1034f13\" }\n    }\n  \u003c\/script\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n      {\n        \n        \"__shgProductInit\": {\n          \"uuid\": \"s-e78c3cdd-09f5-49c7-927a-6db68b703250\",\n          \"platform\": \"shopify\",\n          \"currency\": \"USD\",\n          \"productId\": \"8066497052884\",\n          \"staticVariant\": false,\n          \"hideIfDraft\": false,\n          \n          \n          \n          \n          \n          \n            \"productHandle\": \"ez-neck\",\n            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modularidad y portabilidad.\u003c\/div\u003e \u003cdiv class=\"hotspot\" style=\"top: 58%; left: 72%;\"\u003e+\u003c\/div\u003e \u003cdiv class=\"hotspot-tooltip\" style=\"top: 58%; left: 72%;\"\u003e\n\u003cb\u003eEspuma de alta densidad\u003c\/b\u003e: acolchado para mayor comodidad.\u003c\/div\u003e \u003cdiv class=\"hotspot\" style=\"top: 80%; left: 20%;\"\u003e+\u003c\/div\u003e \u003cdiv class=\"hotspot-tooltip\" style=\"top: 80%; left: 20%;\"\u003e\n\u003cb\u003eAsa moleteada\u003c\/b\u003e: para un agarre óptimo\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"shg-box-vertical-align-wrapper\"\u003e \u003cdiv class=\"shg-box shg-c \" id=\"s-c062758f-557d-41ce-92dc-23c3ac3e0fa1\"\u003e \u003cdiv class=\"shg-box-overlay\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"shg-box-content\"\u003e \u003cdiv id=\"s-f57a8fc1-db8d-4fca-b9d2-26ba2dd3ee73\" class=\"shg-c shg-align-center\"\u003e \u003cdiv class=\"shogun-heading-component\"\u003e \u003ch1\u003e \u003ci\u003e“Creo que el cuello es una de las cosas que definitivamente deberías fortalecer.” \u003cbr\u003e\u003c\/i\u003e\u003cbr\u003e- Joe Rogan (episodio 1492) \u003c\/h1\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-d0a0ecde-cd18-4665-af44-df526d561678\" class=\"shg-c \"\u003e \u003cdiv class=\"shg-rich-text shg-theme-text-content\"\u003e\u003cp style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: 12px; color: rgb(255, 255, 255);\"\u003e*Esta cita se refiere al entrenamiento del cuello en general y no constituye un respaldo a nuestro producto específico.\u003c\/span\u003e\u003c\/p\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv id=\"s-04e496a3-39d1-4b34-a978-296a0be47f98-root\"\u003e \u003cdiv class=\"shg-image-margin-container-s-04e496a3-39d1-4b34-a978-296a0be47f98\" id=\"wrap-s-04e496a3-39d1-4b34-a978-296a0be47f98\"\u003e \u003cdiv 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src=\"https:\/\/i.shgcdn.com\/9449c684-0fdc-4ac4-98b9-b31dbe00b32c\/-\/format\/auto\/-\/quality\/normal\/\" alt=\"Ilustración de prácticas antiguas de entrenamiento del cuello de diversas culturas.\" class=\"shogun-image \" decoding=\"async\" loading=\"lazy\" draggable=\"false\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"shg-imageV3-content shogun-image-content-v3 shogun-image-content-not-linked\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cscript class=\"__SHG_DATA__\" type=\"application\/json\"\u003e\n    {\n      \"__shgImageV3Elements\": { \"uuid\": \"s-04e496a3-39d1-4b34-a978-296a0be47f98\" }\n    }\n  \u003c\/script\u003e 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