Under Armour Women's Essential Twist 2.0 No Show Socks (6 Pack) 97% Polyester/3% Spandex Imported Flat knit conforms to foot for superior touch and feel Dynamic arch support helps reduce foot fatigue Heat Gear fabric wicks sweat away from your skin to keep you cool, dry, and light Armour Block Technology helps prevent growth of odor causing bacteria in the sock Armour Dry material wicks moisture, accelerates evaporation