Champion The Great Divide Sports Bra (B7917) 88% Polyester/12% Spandex Imported Pull On closure Machine Wash Moisture Management technology and ventilating mesh for coolness and dryness Contoured under-bust inner channel for support and shaping,Compressive fit for support. Pullover racerback keeps straps in place, giving you full freedom of movement Wirefree, molded cups provide shape and support