From Under Armour, this sports bra features:

• super-smooth, double-layer HeatGear fabric that delivers superior next-to-skin feel and lasting comfort
• super-soft and stretchy branded elastic band that delivers a custom, comfortable fit
• classic pullover style with racer back design for enhanced range of motion and easy layering
• built for mid-impact support
• best for A to C cup sizes
• polyester/spandex