Nike Women's Pro Rival Bra 100% Nylon Imported Elastic closure Hang Dry Dri-FIT fabric wicks away sweat and helps keep you dry and comfortable Racerback design for a natural range of motion and wide straps for a feminine look and supportive fit Molded cups add definition while the compression fit provides excellent support and a locked-down feel without an underwire Keyhole opening in the back for ventilation The contoured seams and the elastic chest band offer superior support and an enhanced fit