1. Material: The fabric is imported, containing 75% nylon and 25% spandex. 2. Closure method: Buckle closure. 3. Washing instructions: Only hand - washable. 4. Multi - way deep U - shaped backless bra: It has adjustable shoulder straps and can be worn in multiple ways, such as a deep V bra, low - back bra, backless bra, halter bra, cross - back bra, strapless bra, transparent strapless bra, open - back bra, low - cut bra, and wedding bra. It can also be worn on a daily basis. 5. Back - beautifying bra suitable for low - back dresses or shirts: It features an innovative adjustable single - buckle back design on the shoulder straps to create a low - back silhouette. The back shoulder straps of this bra can be pulled down 5.5 inches lower than those of ordinary bras. 6. A bra that is skin - friendly, seamless, and comfortable: The side fabric of the bra contains 75% nylon and 25% spandex, which is light and sweat - absorbing. The cup lining is made of 100% polyester fiber, breathable and elastic. 7. Using a fitting process, it is smooth and invisible, and the bra stays in place: It has soft thin cups; the 1 - centimeter double - sided elastic shoulder straps are more durable; the wires are made of soft materials and will not deform after washing. It perfectly fits the body curve. 8. A versatile convertible bra: It has a large U - shaped back design that shows off the beautiful back and shoulder lines. It is the perfect match for tops, low - cut and backless dresses, showing off a sexy and charming back. This backless bra is a must - have item in the wardrobe, making all kinds of fashionable outfits possible. With its diverse construction, it can almost be paired with any clothing.