TCK Sports Krazisox Zebra Stripe Socks High Quality: 77% Polypropylene, 17% Nylon, 3% Elastic, 3% Lycra Spandex Made in USA Shoe Size: Small fits Youth 12-5; Medium fits Mens 6-9 or Womens 7-10; Large fits Mens 9-12 or Womens 10-13 Moisture Control and Blister Control Heel/Toe Design for comfort Double Welt Top