Cole Haan Men's 3 Pack Dress Allover Dashes Casual Socks 32% nylon/30% modal/30% micro polyester/6% polyester/1% spandex/1% other Machine Wash Nylon is a strong fiber with a soft hand Nylon is durable and shrink resistant Modal is 50-percent more water absorbent than cotton, has a soft hand Modal has great washability