Seamless bras, with their cups made of molded material, can become even more invisible under clothing with racerback strap design. Racerback bras have straps that are angled close to the shoulder blades, which keeps the straps from slipping or showing under sleeveless tops and tanks. Often seamless racerback bras also have front closing mechanisms, which creates a perfectly smooth back as well.
There are almost limitless style options with these bras, including either a T- or Y-back; cups that are full coverage, push-up or demi; pullover styles; and all manner of sports bra. There are no size limitations either; many manufacturers offer racerback seamless bras in sizes ranging from 32A to 40D and higher.