These crew length socks are designed to bring extracomfort and durability when wearing with steel toe boots. The toesand heels are reinforced to provide extra strength in those areas. The collars have elasticity and will stay in place to keep its shape. Antimicrobial to help prevent odor. Two pair per pack. 60% Cotton / 23 Nylon / 15% Polyester / 2% Spandex. Made in USA.