Firm high waist controls are waist trainers,girdles,shapers,and control. They work the same way ”compressing”. The skin is an organ which expands and contracts. Our firm high waist control works with exercising and dieting as well for that tremendous effect. Very firm and durable. Should be worn continuously,dieting and exercising incorporated as well.The waist training area is around the tummy only as it doesn’t affect the hip and butt. This waist shape wear works as a butt lifter and the butt area is free size. It doesn’t roll down and it fits well. Works very well with proven. Be fit and stay in shape!