MASS21 Women's Steel Boned Latex Corset Waist Trainer Underbust with Zipper/Hook A Promotion of Style 3: 15% off purchase of 1 or more items offered by MASS21. 25 steel bones can provide support and are cushioned by thicker material which can avoid bothering or hurting your skin. The latex material ensure it is ductility and the cotton lining is friendly to your skin. High compression. It can help you to reduce your waistline when you wear it. Moderate sporting activities will be better. You can keep a good figure with it.Besides, it is beneficial for postpartum recovery. It is adjustable. You can set how tight or loose you want the waist trainer to be by means of the 16 hooks and 3 different settings. You can select size from our size chart to make certain of your size.DO NOT use Amazon Size Chart due to different measurement standards. If you are not sure of it or have any other questions, you can contact us at any time.