[Solid:86% nylon 14% spandex Space dye: 87% polyester 13% spandex quick-drying fabric helps keep you cooldry and comfortable. Medium impact supportive workout sporty bras to let you stay fit & focused. Racerback and pullovers design provides full range of motion. Double-layer offer enough support and full coverage;compression fit sports wire-free bras deliver superior hold and support during running and gym workouts. Wide covered elastic underband for support flat seams move smoothly against your skin to help reduce irritation caused by chaffing.]