adidas Men's Copa Zone Cushion Sock, Black/Infrared, Large, Men's Shoe Size 9-13, Women's Shoe Size 10-12+ 98% Nylon,2% lycra Imported Extra Small fits youth shoe sizes 9C-1Y Small fits youth shoe sizes 13C-4Y Medium fits men's shoe size 5-8.5, women's shoe size 5-9.5 & youth shoe sizes 4Y-169 Large fits men's shoe size 9-13 and women's shoe size 10-175