QinYing Party Underwear Waist Cincher Bustier Underbust Boned Corset Drawstring closure Material: Satin + Polyester 4 flat steel bones in the closure edge, others bones are plastic Lace up in the back for adjustment Package includes: 1 corset + 1 g-string Note: Our size is about 1-2 size smaller than US size, please read the size chart for reference