High-quality Natural Latex Rubber Fabric, the skin side is made of pure cotton lining, which is comfortable and breathable. It is very comfortable even if you wear waist training corset all day, and gives you a jaw-dropping curve. Vest-style and U-type Anti-droop Breast Design. Adjustable Shoulder Straps and 3 Rows Hook-and-eye Closures Design. 25 Spiral steel bones supports, flexible and durable, bend easily but recover quickly to origin. The overall shaping effect of this waist training vest is very good, giving you a beautiful hourglass figure.