Chantelle Women's Sport High Impact Convertible Bra, Grey/Mist,32DDDD US/32F UK/32G EU. Reducing bounce up to 68 percent , the full-support high impact convertible sports bra effectively contains, supports, and lifts during high-impact activity. Made of soft and breathable microfiber, this full-coverage style will keep you supported and comfortable, up to an h cup. Clip the attached j-hook together on the straps to easily convert into a racer back. This product is designed in France.