High Waist Workout Shorts: Our highest quality stretch fabric contours your curves and shapes the natural shape of your waist. With their wide high waist with tummy control, this biker set is perfect for active women. Butt Lift Tummy Control: Widens the waistband for great tummy control. The arc design on the buttocks gives your butt a streamlined look like a juicy peach, shapes your butt perfectly, shows your charm and sexy curve.