The VTG NEW Flexees Underwonder 3915 Waist Shaper is a vintage style shapewear panty designed for a high waist with long legs. Made from a nylon blend material, this firm compression shaper features boning for added support and a slimming effect. The beige color and solid pattern make it a versatile piece for shaping and contouring the waist area. Size L, this shapewear offers a comfortable fit for women looking to flatten their tummy and reduce waist size. Style number 3915. Innovative waist shaping construction for an hourglass shape. The waist has boning in it. It has a open gusset.