A unique keyhole design for added breathability and all the support you need in all the right places. You'll stay incredibly comfortable, no matter what. Best for A to C cups. UA Compression sports bras deliver strategic support, tailored for medium-impact activities like cycling, weight training & boxing. Classic pullover style with racer back design for enhanced range of motion & added keyhole design for extra ventilation. Super-soft jacquard elastic band delivers a custom, stay-put fit. HeatGear® fabric delivers superior next-to-skin feel. Material wicks sweat & dries really fast & light. 4-way stretch construction moves better in every direction. Double-lined for coverage, no padding. Compression:Ultra-tight, second-skin fit. 87% Polyester/13% Elastane.