78% cotton, 17% polyester, 5% other fiber. Double tough reinforced heel and toe. Thick cushioning for maximum support. Machine wash warm, tumble dry. Made in USA. The Hanes Classics cushion crew sock is made from ultra soft ring spun cotton for extra comfort. Other features include a double tough reinforced heel & toe for enhanced durability, thick cushioning for maximum comfort and knit with spandex for a better fit.