O'vinna trade; Women's Shapewear Corset Waist Shaper Trainer Cincher Vest(Black) This product features its comfortable and flexible fabric, main material is Polyester/Spandex, breathable with mesh, ideal gift for any women who plan to loss weight and have a hourglass shape. Technology fat drainage, U-shaped chest gather, Science cut abdomen, Forced back fabric america, W-type mechanical hip. 3 hook-and-eye closures for flexible sizing, Hook first eyes starting from botton and move up. Takes inches off your waist and creates an hourglass figure and promotes a quick postpartum recovery. Perfect for waist training,yoga,running,weight loss,party and any occasions. Please don't use amazon size chart. please use our advice size chart.