Womens Waist Trainer Corset Training Cincher Underbust Girdle for Weight Loss High Elastic Latex Material--- The inside is pure Cotton and outside latex is very smooth for under clothes. Ideal for YOGA, POSTPARTUM RECOVERY, GYM, SPORTS, BODY SHAPING etc. Helps with Weight loss * Reduces Waist Size * Improves your posture * Mobilizes fat cells, slims your midsection and shapes your torso. 9 Spiral Steel Bones Design---Flexible Supportive bones around the waist corset, they can bend easily but recover quickly to origin, make this corset never ride up when you sit or bend. Provide waist & back Support let you feel COMFORTABLE when wearing it. 3 Hook-And-Eye Closures---3 rows of hooks allow for the size adjustment, you can adjust as you make progress with your training and ensure you maintain a snug fit at all times. Great to wear with slim fit clothing, makes you feel confident and feminine. About the SizeWe have already improved our size base on customer feedback on 20th September, 2016, please choose your size from our size chart base on your current waistline, if you want a tighter effect,please size down. If you are between the sizes, please size up.