The Ultra Lite Double Tab Run Sock boasts super-lightweight HeatGear fabric, strategic ventilation to keep feet cool and dry, and Left/Right technology for a true anatomical fit. Under Armour's Signature Moisture Transport System wicks sweat away from the skin and accelerates evaporation for quicker drying time. ArmourBlock technology helps prevent the growth of odor-causing bacteria, ensuring that feet stay fresher longer. Embedded arch support helps reduce foot fatigue for even greater comfort. The Ultra Lite Double Tab Run Sock is made from a durable blend of 55% polyester, 41% nylon, and 4% spandex fabric. Imported.