Solmate Adult Mismatched Crew Socks 80% cotton 80% Cotton, 19% Nylon, 1% Lycra. Life is too short for matching socks! SMALL - Women's Shoe Size 6 - 8 or Men's 5 - 7 MEDIUM - Women's Shoe Size 8 - 10 or Men's 7 - 9 LARGE - Women's Shoe Size 10 - 12 or Men's 9 - 11.