Waist Trainer Corset for Weight Loss Sport Workout Body Shaper Tummy Fat Burner X-Large:Fit Waist 31.5" x 33.8" NWOT 3 rows of hook/eye design provides different level of compress, allowing you to adjust size as necessary. Made of quality Nylon/Spandex fabrics. Stretchable, breathable and comfortable to wear. Four piece built-in steel bones not only effectively control & flatten the stomach, but also provides enough support for back pain relief and correct your posture.