4 Pairs Thin Business Socks 100% Cotton Material: 70% Combed Cotton / 26% Nylon / 4% Spandex. The smooth, light socks, wash-resistant sheen and makes them really comfortable. The socks 100% non-irritating to the skin and allergy-tested. Premium Combed Cotton feels ultra-soft, inside and out. Nylon adds strength and smoothness.