This ingenious little device effortlessly turns any bra into a racerback. It's as simply fabulous as that. Just slip your bra straps on either side of the Strapper and voila! Unlike a standard racerback bra, you can also adjust where the strapper sits on your back for different silhouettes (more like a halter? move the Strapper right up under your neck). Also keeps loose straps from falling off shoulders. Comes in several colors depending on your outfit. Sometimes it's the simplest solutions.