75% Nylon, 25% Spandex Imported Buckle closure Hand Wash Only 1). Multi-way deep U-shaped plunge backless bra. Convertible straps can be worn as a low plunge bra, low back bra, backless bra, halter bra, criss-cross back bra, strapless bra, open back bra, low cut bra, wedding bra, or everyday bra. 2). Bralette with innovative adjustable back single-button design creates a low-back silhouette. The back strap can be adjusted lower than a standard bra, down to 5.5 inches, ideal for low-back dresses or blouses. 3). Skin-friendly, seamless, and comfortable construction. Main body fabric is 75% nylon and 25% spandex, lightweight and sweat-absorbing. Cup lining is 100% polyester, breathable and elastic. 4). Bonded construction for smooth, invisible wear. Soft, thin cup with 1 cm double-sided tension straps for durability. Underwire made of soft flexible material that maintains shape after washing. Designed to stay in place and follow the natural body curve. 5). Versatile convertible bra for various styles. The wide U-shaped back design highlights the back and shoulders. Ideal for pairing with tops, low-cut, and backless dresses. A wardrobe essential that supports a variety of fashionable outfits through its adaptable design.