Product Details ①. Convertible straps for versatile wear - can be styled as low plunge, low back, backless, halter, criss-cross back, invisible, clear strapless, open back, low cut, wedding or everyday bra ②. Adjustable back single-button design - creates a low-back silhouette with strap pulled down to 5.5 inches, ideal for low back dresses or blouses ③. Skin-friendly and comfortable - flank fabric with 75% Nylon and 25% Spandex for lightweight and sweat-absorbing feel; 100% Polyester cup lining for breathability and elasticity ④. Smooth and invisible with bonding craft - soft thin cup, 1CM double-sided tension straps for durability, and soft wire underwire that resists deformation during washing ⑤. Big U-shaped back design - fully shows back and shoulders, perfect for搭配 tops, low-cut and backless dresses Specification ①. Material: 75% Nylon, 25% Spandex (flank fabric); 100% Polyester (cup lining) ②. Closure: Buckle ③. Back Strap Adjustment: Can be pulled down to 5.5 inches ④. Care: Hand Wash Only ⑤. Origin: Imported Package List ①. 1 x Convertible Backless Bra Warm Tips ①. Hand wash only to maintain shape and durability ②. Adjust the back strap according to the neckline and back design of your outfit for optimal fit ③. Store in a cool and dry place when not in use