adidas Traxion Premier Football/Baseball Crew Socks 90% Nylon, 10% Spandex Imported Specially designed sock for football and baseball players; Maximum comfort combined with climalite technology to help keep you cool and dry Small: Women's Shoe size 5-6.5, youth shoe size 1Y-5Y Medium: Men's Shoe size 6.5-9, Women's Shoe size 8-10.5 Large: Men's Shoe size 9.5-12, Women's Shoe size 10-12+ X-Large: Men's Shoe size 12-16