Double Layer Tummy Control: Inside zipper closure makes it easier to put on and take off than traditional loop closure, and the strong inner velcro tightly compresses the waist, this will help you sweat more and burn more calories. FIRM FIT-YOU WOULD WANT TO SIZE UP WITH THIS PRODUCT Material: 96% Cotton, 4% Spandex, 100% Latex Closure: Zipper & snaps Color: Black Size: S to 9XL Feature: Double waist belt with built-in 7 steel bones