Under Armour Women's Heatgear Boot Socks (1-Pack), Black, Medium 95% Polyester, 3% Nylon, 2% Spandex Imported True seamless toe delivers superior comfort and reduced irritation Embedded arch supprt helps reduce foot fatigue ArmourDry material wicks moisture, accelerates evaporation ArmourBlock technology helps prevent growth of odor-causing bacteria Strategic cushion protects high-impact areas of feet