Medium, White, Rigger Soft Work Socks, Moisture Wicking, Dries Quickly & Very Durable, Treated With Odor Guard Antimicrobial Treatment To Kill Bacteria & Odor, Dry-Release Tencel For High Moisture Management, 65% Acrylic, 19% Stretch Nylon, 10% Polypropylene, 5% Dry-Release Tencel, 1% Spandex, Fits Shoe Sizes Women's 6-10, Men's 5-9.5.