SYROKAN Women's Workout Sports Bra High Impact Support Wireless Mesh Racerback Top Main:72%Polyamide,28%Spandex;Lining:87%Polyamide,13%Spandex Elastic closure Non-wire,non-padded construction to provide all-day comfort Elastic underband with hook&eye closure for better support Double layer to confirm opaque and provide full figure support and comfort Mesh for targeted ventilation Power racerback for better stability and ensuring freedom of movement