NIKE STADIUM SOCCER OTC SOCKS YOUTH BOY'S 13C-3Y Dynamic Arch compression and anatomical left/right shaping provide a supportive and comfortable fit Reinforcement over the heel and toe keeps for durability while a padded ankle bone area protects a normally vulnerable area. Dri-FIT moisture wicking for cool, dry comfort 77% nylon/16% polyester/4% cotton/3% spandex Size: Youth 13C-3Y