【High-Quality Material】 This YONEX undershirt is made from a blend of 82% polyester and 18% polyurethane, providing excellent stretch and a comfortable fit. ⚫️ Unused wristband included - Brand: YONEX - Washing Instructions: Hand wash recommended I purchased this for my child who usually wears a size M, but it felt too tight and uncomfortable, so I am selling it. It has only been worn once. I bought it for summer to prevent sunburn.