Under Armour Men's HeatGear Solo No-Show Socks (3 Pairs) 92% Polyester / 5% Nylon / 3% Spandex Imported Versatile no show socks Moisture Transport System wicks sweat away from the body Anti-odor technology prevents the growth of odor-causing microbes Embedded arch support reduces foot fatigue Seamless toe & contoured "Y" heel for the perfect, comfortable fit