bout this item FULL COVERAGE WAIST TRAINER FOR WOMEN: Unlike previous workout waist trainer for women, the body shapers for womens tummy and back fat have upgraded elastic fabric. The waist cincher shapewear made of 84% polyester and 16% spandex fabric uses a 360 degree stitching design, allowing the muffin effect at the waist to hide well under the clothing. Ensure that you are able to fit the corset waist trainer for stomach to the maximum extent and flatten your abdomen through stable tummy control. Only worn once under formal gown I have a large and extra large.