I have found there is no better run bra for support and comfort! There is cup encapsulation for your breasts so you are not just squished flat and tight. So comfortable and easy to put on! Designed specifically for running, this sports bra provides absolute support and friction-free comfort, so you can focus on your performance. Shock Absorber's Infinity 8 system offers targeted support to control the figure 8 movement of breasts when running. Wireless, unpadded cups shape and support the breasts. Cups have a completely soft seamless microfiber lining to reduce repetitive friction injury. Tall center front offers compression coverage. Quick-dry, moisture-wicking chest underband minimizes sweat collection at key hot spots. Tall, sewn-on striped elastic underband for stability. Covered elastic under arms reduces chafing. Breathable, quick dry sports performance fabrics wick moisture away and allow air circulation, essential to keep you cool while exercising. Abrasion resistant knit fabric resists pilling and keeps your sports bra looking newer longer. Reflective metallic trim gives higher visibility. Two closures in back: Spacer foam backed hook-and-eye closure at bottom, and slide-and-snap plastic closure at the top. Wide, center-pull, cushioned shoulder straps adjust in the back with multi-tab insertion slots. ard back forms 81% Polyamide, 10% Polyester, 9% Elastane