Since underwire bras are the most popular bras on the market, it's no surprise that many brands offer racerback bras styles. Modern underwires have wire that can be made of plastic coated metal, flexible wire, molded plastic or a resilient plastic . The underwire is sewn into the fabric under and around each cup and provides support, lift and shape.
Typically a racerback underwire bra will be front closing. The straps angle close to the shoulder blades in the back and can sometimes be wider than typical straps. Whether Y- or T-shaped, racerbacks offer freedom of shoulder movement and good support. Sometimes the band itself is extra-wide, smoothing back fat and providing even more support. From sports bras to t-shirt bras and even flirty balconettes and push-up bras, racerback underwire bras are a versatile addition to your lingerie wardrobe.