So comfortable you can sleep in it, lounge in it, or work out in it.The HEROINE SPORT O-Bra One-Shoulder Sports Bra combines style and performance in an eye-catching black hue. Featuring a bold one-shoulder silhouette with an O-ring front detail, this medium-support bra is crafted from a high-performance blend of 82% polyester and 18% spandex. Proudly made in the USA, it includes a secure elastic waistband and lined sleeves for optional bra pad inserts. Care - Machine wash cold inside out on a delicate cycle, wash with like colors, and tumble dry low.