ACCURATE SIZING: Shoe Size: Small Youth 12-5 or Womens 4-7, Medium - Womens 7-10 or Mens 6-9, Large - Womens 10-13 or Mens 9-12, X-Large Womens 13+ or Mens 12+

PERFORMANCE MATERIALS: Fiber Contents: 77% Polypropylene, 17% Nylon, 3% Elastic, 3% Spandex

PERFORMANCE FEATURES: Moisture Wicking, Arch and Ankle Compression to reduce fatigue, Blister Control, Lightweight, Double Welt Top, Heel/Toe Design, Infused Alphasan Antimicrobials control bacteria and odor