Under Armour Victory Tank - Women's The Under Armour HeatGearŪ Victory Tank improves mobility and accelerates dry time to help increase your workout potential. Soft, lightweight rib fabric delivers amazing next-to-skin comfort. Lightweight stretch construction improves mobility and maintains shape. Signature Moisture Transport System wicks sweat to keep you dry and light. Classic racer back detail with strategic mesh insets provides extra ventilation when things start to heat up. HeatGear works best in weather between 75 and 100 degrees. 94% polyester/6% spandex. Imported.