4 Pairs Cotton Socks 81% Combed Cotton / 16% Nylon / 3% Spandex Material: 81% Combed Cotton / 16% Nylon / 3% Spandex 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. Spandex adds shape-keeping stretch.