54%Nylon,46%Spandex Button closure Premium Material Bandeau Bra: Strapless Front Buckle Push Up Bra is made of 54% nylon and 46% spandex blend, which is made of premium fabric, feels cool and smooth, breathable and soft. The wire-free design and ice silk fabric will bring you more comfortable experience. Unparalleled Extraordinary Experience: The Strapless Front Buckle Push-Up Bra features a one-piece seamless cut and says goodbye to restraint. Soft, high-stretch comfort fabric won't make you uncomfortable, so you can wear it all day. Product advantages that cannot be rejected: The seamless tube top bra adopts a stable four-breasted button design in the front row, which can freely adjust the gathering degree. The high-stretch fabric can be worn for a long time without deformation, with zero pressure and zero restraint. Wirefree design makes it can be rolled freely in 360, and the cup is not easily deformed. The three-dimensional cup design can be gathered to support the chest without shifting or running the cup. Detachable shoulder straps and built-in detachable cups: The strapless front button push-up bra has a pair of adjustable elastic straps and a pair of adjustable sheer straps, you can adjust it as a double, single shoulder Strap, cross straps, bandeau bra. The built-in detachable cups help you keep your chest up during the day without the embarrassment of nipple bumps, and you can take out the inner cups at night for a good night's sleep. Strapless Front Buckle Pull Up Bandeau Bra Size Range: S (Fit A-C Cup, Under 105lbs, Under Bust: 26.5"-28.5"), M (Fit A-C Cup, Under 120lbs, Under Bust: 28.5"-30.5 inches), L (Fit A-C cup, under 135lbs, under bust: 30.5"-32.5"), XL (Fit A-C cup, under 150lbs, under bust: 32.5"-34.5").