Nike Team Match Fit Knee High Soccer/Football Socks Over The Calf SX6836-414 Midnight Navy Blue, Grey SX6836-414 XS Extra Small (13C - 3Y) Youth 45% Polyester, 32% Nylon, 16% Cotton, 7% Spandex Extreme comfort and an excellent performance starts from the feet up. Nike Matchfit Over-The-Calf Socks delivers sweat control and an excellent fit. DRI-FIT technology for sweat control Dynamic compression arch support Targeted cushion in high-wear areas