DexShell Ultralite Bamboo Waterproof Socks 30% nylon Imported WATERPROOF: functional interlining Porelle membrane make DexShell 100% waterproof SOFT BAMBOO LINING: Outer: 96% Nylon, 3% Elastane, 1% Cuff Elastics / Inner: 70% Bamboo rayon, 30% Nylon COMFORTABLE: ankle length, ultra-light weight, seamless construction with casual design BREATHABLE: Porelle membrane make it highly breathable VERSATILE: ideal for any outdoor activity