Perfects Australia Millie Strapless Contour Underwire Bra (14UBR93). Enjoy the soft stretch microfiber of this bra, styled with seamless padded t-shirt cups and convertible straps. Made of nylon, polyester, polyurethane and spandex. Contour/t-shirt underwire cup has light padding for a completely smooth look. Sleek, seamless cup overlay won't catch against fabric. Center - tall, wide, arched center panel. Silicone gripper elastic is sewn onto inner edge of cups for stability. Flexible boning at side seams adds more support. Tall sides and back are self-lined microfiber with silicone gripper elastic at top and bottom edges. Removable, soft restricted stretch elastic straps adjust at front or back with goldtone metal hardware. Convertible hardware lets you remove straps or cross them over at front or back. Two tabs on each side of back let you wear straps kicked in or wide-set. Hook-and-eye closure has coated metal hardware with soft backing for comfort. See Fitter's Comments below for hook count.