Hit the gym in the Under Armour Women's Knockout T-back Tank Top. The polyester/elastane construction feels soft against your skin, and the 4-way stretch material flexes with your body. Anti-odor technology helps prevent odor-causing microbes, and the moisture-wicking technology offers a dry feel. Under Armour Women's Knockout T-back Tank Top Black/Black/White, X-Small - Women's Athletic Performance Tops at Academy Sports