The Spanx Bra-llelujah! Racerback Bra Features SPANX SmartStretch straps and customized back zones, this updated fan-favorite provides added support without compromising comfort. Designed with an all-hosiery back, engineered to be one of the softest, most sumptuous bras in the SPANX bra assortment. With just one wear, youll be singing the praises of this life-changing bra Bra-llelujah!Personalized Fit! This bra was strategically designed to perfectly fit and support your size. Three graduated zones at back are scaled to support dependent on bra size: 2 support zones in 36B and smaller and 3 support zones in 36C-38DD. A back with benefits smoothes out lumps and bumps!. 3D technology in cups to give your girls the best shape. SPANX SmartStretch Straps mold to the body for a comfortable fit and wont dig. Underwire sits flat against the skin for the ultimate wearing experience. Front-closure design eliminates difficult metal hooks for a completely smooth back. Fabric Content: Body: 72% Nylon, 28% Spandex/Elastane. Inner Cup: 100% Cotton. Wing: 91% Nylon, 9% Spandex/Elastane