Hanes Men`s Ultimate X-Temp&trade; No Show Socks 68% Cotton, 29% Polyester, 1% Natural Latex Rubber, 2% Other Fibers. Importado 68% Cotton 29% Polyester 1% Natural Latex Rubber 2% Other Fibers Socks that take extra steps keep you comfortable! X-Temp technology adapts to temperature environment and activity -- speeding and slowing cooling for ultimate comfort all day More than cool! Famous Hanes sock fit and foot-pampering plus high-tech performance Socks wick moisture away to keep feet dry Comfort toe seam