TCK Krazisox Polka Dot Over The Calf Socks High Quality: 77% Polypropylene, 17% Nylon, 3% Elastic, 3% Lycra Spandex Made in the USA Shoe Size: Small fits Youth 12-5 or Womens 4-7; Medium fits Mens 6-9 or Womens 7-10 Moisture Control Blister Control Lightweight