Racer back convertible bras let you wear your bra as a traditional 2-strap attaching on either side in back, but also let you hook the straps together, forming a racerback style. This is an especially wonderful feature for tops that are bare at the top or have cut-in armholes. Need a bra that looks great under tops with cut-in backs? Check out our convertible racer-back bras at herroom.com and get free shipping.