Underbust Booster Shape wear reduces the waist line with a strong tummy and back panel with boosting and supporting your breasts releaving back pressure. Wear this with your favorite bra. Creates a slimming fit without uncomfortable front fasteners or rods. Adjustable shoulder straps for the perfect fit. Comes in a full panty with an eye hook closure for easy bathroom use. This garment is considered strong compression, and is formed of several layers. This garment is for serious abdominal control, please follow our size chart carefully, when in doubt, please choose the larger size. Fabric Content: Outer linen: 80% nylon -20% spandex front middle linen: 85% polyester -15% spandex inner linen: 85% polyester -15% spandex. Hand Wash Cold. Lay Flat to Dry.