1.Breathable & stretchy mesh fabric. Suitable for any aerobic exercise or weight reduction program.
2.3 hook-and-eye closures allow you to size the garment down with you,Flexible boning anchors the cincher and prevents migration
3.4 pcs built-in Steel bones. It will more rigid and keep you in best posture. It's flexible and durable, as soft as plastic bones, can bend easily but recover quickly to origin.