Designed specifically for runners, the award-winning Ultimate Run bra reduces bounce by up to 78% and provides ultimate friction-free comfort. Infinity-8 support system counteracts the breasts figure-of-eight movement during running Soft, seamless inner reduces rubbing or chafing Non-slip, wide padded adjustable straps Reflective tape across cups for high visibility Full back opening for easy on and off Made from moisture-wicking, breathable fabric, sports performance fabrics Shock Absorber Womens Ultimate Run Sports Bra - Black - Size 30E female Clothing, Activewear, SportsBras Synthetic.