Bamboo Viscose Athletic Knee-High Tube Socks 80% Viscose from Bamboo, 10% Nylon, 5% Polyester, 3% Rubber, 2% Spandex Made of Eco-Friendly Bamboo Viscose for Ultra-Soft Feel Moderate cushioning in ball/heel protects against blisters Helps Control and Prevent Foot Odor Thermo-Regulating to Help Regulate Skin Temperature Exclusive EcoSox construction wicks away moisture