Relive Shirt, unopened and unused. Size M, V-neck. Short-sleeved, convenient as winter innerwear. [Patent-pending] This magical shirt enhances your natural physical function just by wearing it, improving muscle strength and flexibility. It was developed to reduce the burden of caregiving and heavy labor. [Amazing Effects] In wearing experiments conducted by a third-party organization, back muscle strength improved by an average of 38%, and flexibility improved by approximately 6cm in forward bends. It is said that caregivers and athletes are also expressing their joy. It is said that over 95% of people experience the effects just by wearing it. *Individual results may vary. I haven't worn it. #Relive #ReliveShirt #Unisex #Recovery #RecoveryShirt #LowerBackPain #Innerwear