Under Armour Infinity Low Bra Women's The Under Armour Infinity Low sports bra tosses traditional construction rules to the side and injects the padding in a figure-8 pattern for a more aerodynamic fit and a lighter feel. Strategic perforations allow for zoned cooling and a fast-dry fabric keeps you comfortable during exercise. Fitted: Next-to-skin without the squeeze. Best for A to C cups. Built for Light-Support activity & all-day comfort. Molded, PU injected one-piece padding for ultimate comfort & added coverage. Mesh panels for added breathability. Encased elastic band feels super-smooth & soft. Skinny wordmark branded elastic straps & keyhole back design. HeatGear fabric delivers superior next-to-skin feel.