Purchased from a retailer. Unisex. This is the "Magic Shirt" featured on the popular YouTube show "Reiwa no Tora" (The Tigers of Reiwa). [Patent Pending] This magic shirt enhances your natural physical function simply by wearing it, improving muscle strength and flexibility. It was developed to reduce the burden of caregiving and heavy labor. [Amazing Effects] In a third-party wear test, back muscle strength improved by an average of 38%, and flexibility (forward bend) improved by approximately 6cm. We've received positive feedback from caregivers and athletes. Over 95% of users experience the effects just by wearing it. *Individual results may vary. Caregiving Work clothes Workwear Uniform Burden reduction Welfare Medical Agriculture Construction Building Lower back pain Prevention, etc. Relive Shirt Relive Pants Relive Spats