From the manufacturer

Women's UA Infinity Mid Sports Bra

We threw out traditional construction rules and injected the padding in a figure-8 pattern for a more aerodynamic fit and a much lighter feel.

• Fitted: Streamlined fit that’s not too tight or too loose.
• Delivers strategic support, tailored for medium-support activities like cycling, weight training & boxing
• Molded, PU injected one-piece padding for ultimate comfort & added coverage
• Mesh panels for added breathability
• Smooth, sweat-wicking band has easy hook & eye closure for easy on & off
• Adjustable straps with wordmark detail for a custom fit
• U-shaped open back design
• HeatGear fabric delivers superior next-to-skin feel
• Material wicks sweat & dries really fast