NIKE MENS 3PPK DRI FIT FLY CREW SOCKS Dri-FIT fabric to wick sweat away and help keep feet dry and comfortable Supportive Fit with arch compression Reinforced heel and toe for enhanced durability 37% Cotton, 30% Nylon, 30% Polyester, 3% Spandex Medium: Men's 6-8, Women's 6-10