Sculptresse by Panache 9670 Dana Strapless Bra Black 38GG Convertible bra comes with straps, but is designed for supportive strapless wear. Made of polyester, cotton, polyamide and elastane. Multi-part underwire cup has light padding for coverage and transversal and vertical seams for shape. Microfiber cup overlay for sleek, no-catch movement against clothing. Center - tall, arched center panel with bow at top. Sewn-on elastic at front underside for close fit. Firm boning at side seams for added support. Sides are self-lined microfiber with wide silicone gripper elastic along top and bottom edges. Soft, removable restricted stretch elastic straps adjust in back or front with coated metal hardware. Convertible strap hardware removes at back edge to make a crossed back. Hook-and-eye closure with soft underside and coated metal hardware at back. See Fitter's Comments below for hook count.