Do you want to stop your daily struggle with uncomfortable bras?. Do your underwires dig into your skin?. Do your bras prevent you from looking your best?Seamless Sports Bra is wide, flexible one-piece under-bust strap effectively prevents the chest from expanding outwards and provides the chest region with excellent support during exercise.90% Polyamide, 10% ElastaneThe bra's surface uses a high-quality nylon fabric with an added spandex elastic fiber.