BI.TENCON Gothic Women's Denim Underbust Corset Bustier Set with Straps Black Size run small, please choose one size larger than usual wear. Please see our size chart in the pictures area and choose mostly according to your waist size. Material: 90% Polyester and 10% Spandex front busk closure, full lace-up back. Cooperate with high density of pure cotton. 12 flexible bones to give shape and support along with a strong steel busk fastening. 2 Pieces, including 1 Corset, and 1 Matched G Strings