Fabric: Nylon and Spandex Color: black,burnt orange,tide blue Size: S/M/L/XL Bras: Backless Sports Bra High Elastic Solid Backless Sports Bra is made of highly elastic material with excellent stretchability and can perfectly fit the curves of the body. Its design gives the back a charming backless shape, which is fashionable and sexy, while also allowing you to move more freely and smoothly. ​