Ultimate Running Bra Shock Absorber Dry Action System
The Ultimate Run Bra Offers:

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
Hook and eye fastening and upper snap clip to create a racerback design.
Made from moisture-wicking, breathable fabric, sports performance fabrics.
another supplier says: " It’s a snug fit, so we recommend going up a bra size in the band to get the perfect fit."

81% polyamide 10% polyester 9% elastane

Wash at 40 degrees