Faux Leather Imported Busk closure Hand Wash Only Strong Corset Lacing Back: Lace Up. 4.5 Modesty Panel at the back to adjust the fitting. Comes with matching G-String. Boning: 2 Steel bars adjacent to the front busk, 12 Strong Supporting Plastic Bones. It is shaped for a more flattering silhouette and to waist training. The Strong bones gives you strong support and perfectly defined a hourglass shape!