Under Armour Performance Crew Socks Cotton^Nylon^Polyester^Spandex Imported Stay on top of your game with the Performance Crew from Under Armour&reg;. Charged cotton&reg; traction footbed has the comfort of cotton, but dries much faster. Moisture Transport System pushes sweat away from your feet to the surface of the sock so it dries faster. ArmourBlock&reg; Anti-Odor technology keeps your socks fresher longer by preventing the growth of odor-causing microbes. Comfort top delivers a secure, comfortable fit. Embedded arch support reduces foot fatigue. True seamless toe delivers chafe-free performance. Contoured "Y" heel for the perfect, comfortable fit. Under Armour logo across calf and top of foot. 71% polyester, 19% cotton, 7% nylon, 3% spandex. Machine wash warm, tumble dry low. Imported.