The Le Mystere Soiree Longline Bustier Convertible Bra 8556 has a low-cut back and a longline silhouette with supportive boning at front, sides, and back with padded t-shirt cups and removable straps that convert for strapless bandeau wear. Le Mystere's Soiree Longline Bustier Convertible Bra is made of nylon/spandex.