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 runningSoft, seamless inner reduces rubbing or chafingNon-slip, wide padded adjustable strapsReflective tape across cups for high visibilityFull back opening for easy on and offMade from moisture-wicking, breathable fabric, sports performance fabrics*University of Portsmouth 2009 (Scurr et al) - testing carried out against "no bra" conditions.FEATURES: Racer back, non-padded, non-wiredIMPACT: ExtremeSizing Tip: This style can come up small. We find it best to try a band size up from your normal size. This means if you normally wear a 34D, we recommend trying a 36D.