Features: 9 Flexi Steel bones for even compression and support - 3 Layers of fabric for extra comfort – This waist trainer can be used for posture correction, back support, stubborn belly fat, postpartum recovery. - Nylon Core, Cotton Lining and Spandex. Measure around 1 inch above your belly button or smallest part of your waist for accurate sizing. Specifications: Waist Size (CM) - XS (62-68) - S (68-72) - M (72-77) - L (78-84) - XL (88-94) - 2XL (96-102) - 3XL (104-110) - 4XL (112-116) - 5XL (118-124) - 6XL (124-132)