High Waist Trainer Tummy Control Waist Cincher Body Shaper Thong G-string Butt Lifter Seamless Panties for Women.  This shaping string panty briefs for stomach and waist is designed to give you a streamlined look with flattering details. It is made of high-quality cotton and spandex blended fabric which has good elasticity and can be used for a long time without rolling down or falling off when you wear it.