The Under Armour Full Cushion Run Sock boasts lightweight HeatGear fabric construction, 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. The full cushion provides excellent shock absorption for greater comfort underfoot. The Under Armour Full Cushion Run Sock is crafted from a durable blend of 55% polyester, 41% nylon, and 4% spandex fabric. Imported.