Product details:

Wacoal 853302 Contour Underwire Sports Bra Sand 40C Designed for bounce-controlling comfort, with increased ventilation from cups to back, and padding on straps for stress reduction. Made of polyester, nylon and spandex. Contour/t-shirt underwire cups have light breathable padding for comfortable, smooth coverage. Microfiber inner support slings on cup wrap around from top side to bottom for bounce control. Breathable mesh panel on side of cup and top of sides and back for added ventilation. Sewn-on elastic edge at neckline to help maintain fit. Center - tall, wide, arched panel. Soft sewn-on elastic band along base of front. Sides and back are microfiber with fine mesh lining, and a sewn-on elastic edge at top and band along bottom. Padded front straps offer shoulder pressure relief, and have soft, minimal stretch elastic at back that adjusts with coated metal hardware. Convertible hardware at back allows you to wear straps as a cross-back. Hook-and-eye closure at back has soft lining and coated metal hardware. See Fitter's Comments below for hook count.