Racerback bras are a wonderful option for narrow or sloping shoulders. If it's underwire, it can create a fabulous cleavage too. As opposed to the traditional bra, the straps of a racerback join together in the centre of the back. Woman athletes opt for them since they provide a wider range of arm movement and are obtainable in different high performance fabrics. This brassiere is offered in styles such as shirred, cross-back, front open etc. The back design of a racerback bra might show under certain blouses, hence women must be careful while wearing them under their outfits.