The Racer Seamless Sports Bra is our number one selling product. We are seeing and hearing from our customers that we need more sizes to accommodate more girl shapes from AA to DD and more. So we've interviewed girls and moms, measured and tested different variations to expand our size range - and we think we have the perfect fit. The Racer Seamless Sports Bra is double layered to prevent chafing, longer so you won't feel exposed, wicking, antimicrobial and super soft because of the fine high quality yarns we are using. The Racer Seamless Sports Bra will meet the needs of many active girls who want a high performance bra that is made for their figure.