TCK Prosport Performance Tube Socks (Multiple Colors) High Quality: 96% Polypropylene, 4% Lycra Spandex Small - fits Kids shoe size 12-5 Medium - fits Mens 6-9 or Womens 7-10 Large - fits Mens 9-12 or Womens 10-13 X-Large fits Mens 12-15 or Womens 13+ Perfect athletic socks for all sports. Moisture/Odor Control, Antimicrobial, Blister Control, Ergonomic Cushioning, White Toe for I.D., Excellent for sanitary stirrup socks