Color: Black Shipping: Rakuraku Mercari Delivery (anonymous shipping available), ships same day / next day after order Condition: Brand new, unopened, and unused; instant purchase available Regular price: 14,300 yen (tax included) per piece [Product Features] Popular background: Featured on YouTube's "Reiwa no Tora" as the "Magic Shirt" and its spats version Selection tips: Shoulder problems → Relive Shirt α; Back pain → Relive Shirt α + Relive Spats α [Usage & Functionality] Recommended usage scenarios: Physical labor, sports, relaxation time (unlimited wearing scenarios) Patent-pending: Enhances physical function simply by wearing it, improving muscle strength and flexibility. Developed to reduce the burden of caregiving and heavy labor Effectiveness proven: Third-party experiments show an average 38% increase in back muscle strength and approximately 6cm improvement in forward bend flexibility; well-received by caregivers and athletes, with over 95% experiencing the effects (※Individual results may vary)