Women Steampunk Gothic Spiral Steel Bones Brocade Overbust Corset with ChainsAbout Material 90% Polyester 10% Spandex About Spiral Steel Boning Not Easily Deformed. It is more Flexible and Durable than Other Plastic Boned. Because of Flexible, the Spiral Steel Boned is Thinner than the Strong Steel Boned. Internal Flexible Boning Prevent the Garment from Rolling Up or Down. Spiral Steel Boned Waist Cincher Corset is a Helpful Corset, which can Gives you a Slim Figure, and a Hourglass Body Shape. About Size Chart Size Chart(cm)