New Balance NB Breakthrough High Impact Sports Bra (WB91042). A breakthrough for your workout: get the locked-in fit you need so that you can run, leap and lift without holding back in this stabilizing sports bra. Made of polyester, recycled polyester and spandex. Wireless, seamless molded cups are lined with compression fabric with minimal stretch to give each breast a custom, supportive fit and level of control. Compression helps stabilize and control bounce. Straight neckline has a covered elastic edge. Exposed elastic underband is sewn onto bottom front and has minimal stretch for a secure fit. Breathable, supportive panels at sides of cups help to contain and control. Sides and back have outer ventilated mesh, with smooth, supportive compression inside, with covered elastic at top and sewn-on at bottom. Straps have wide stabilized panels at front, with breathable undersides for better airflow. Wide, restricted stretch elastic straps at back adjust with coated metal hardware. Convertible strap hardware at back converts easily to a crossback. NB Dry wicking system works to quickly remove moisture from the surface of your skin and out of the fabric for a drier, cooler feel. Sewn-in tag. New Balance logo along side of left cup. Hook-and-eye pad at back is gel-infused with a sleek underside for comfortable contact, and secures with coated metal hardware. See Fitter's Comments below for hook count. Please Note: This sports bra replaces New Balance WBT3108.