100% Silica gelIMPORTANT NOTE. Reusable invisible lift up bra for woman can be washed multiple times and the adhesive become sticky again after washing. For any concerns, please tell us freely. Please note not machine washable, you only need to simply wet the adhesive surface with warm water, and then allow the cups to dry on the air. closureCOMFORTABLE & SOFT MATERIAL. The sticky bra is made of high quality silicone material. It doesn't hurt skin. And strapless dresses bras for women are lightweight, invisible and comfortable, giving you the realistic feeling. Nobody knows you wear a lingerie, but they will notice your attractive and beautiful look. Also, this push up bras for women is very soft and cute and plenty sticky enough to hold the girls up.INVISIBLE ADHESIVE WINGS DESIGN. With invisible wings on both sides, this adhesive bras for women provide much your breast needed hold, and adjust its degree of tightness. Even though the small chest people, you also can be confident to show your charming with the cleavage strapless dresses bra creates. When you wear a backless dress, the invisible bra wont fall off, giving you double protection without any embarrassment. Besides, their adhesive wings help you to wear and take off easily.DEEP U PLUNGE BRA. With the deep U plunge design, the strapless bras for women helps to push up your chest and creates perfect cleavage. It can gather your breast, providing a sexy and charming shape. This backless bra is the best choice for strapless dress to make your breast curve more beautiful.OCCASION. Self sticky bra is an essential item for wedding gown, low-cut outfits, prom and homecoming dress or any formal evening dress. Suitable for everyday, wedding, Christmas, leisure, party, cocktail, night scene, dance party, party, etc.BONUS. If you buy one deep U plunge bra, you will get a free pair of Nipple Covers. It is unique, friendly, sticky, invisible and comfortable. The edge is thin and can be evenly attached, making it more perfectly fitted and more realistic.