Under Armour Womens Original Racerback Sports Bra $9.87 Under Armour Womens Original Racerback Sports Bra The Under Armour Womens Original Racerback Sports Bra is the hardest working bra in sports. It provides support for mid-impact workouts, such as light cardio and strength training with a compression fit for maximum stability and support. Features: A/B cup support HeatGear fabrication provides moisture transport to keep the athlete cool and dry Soft fabrics and careful construction provide an abrasion free fit 81% 5.3 oz polyester / 19% elastane