Get the shape you need under backless, strapless, halter or one-shoulder dresses and tops. Simply apply the adhesive tape to the clear wings and apply the bra to give shape that stays in place. The clear back strap can be added for additional support. Molded foam cups are lightweight and have added padding for extra lift. • Bra - 100% polyester, 100% polyurethane foam. Wings - one side 100% silicone gel adhesive, one side 100% acrylic adhesive applied to polycarbonate/polyester film.Hand wash with mild detergent in warm water, allow to air dry, do not use bleach, do not machine wash or dry. Get the shape you need in any style of backless, strapless or halter. Instructions enclosed.