LifeVV Women's Waist Trainer for Weight Loss Workout Cincher Hourglass Corset Material: Fabric 82% nylon and 18% spandex, lining 100% polyester fiber Special design smooths midsection while emphasizing natural curves User-friendly design, more convenient to go to the toilet The Perfect Waist is ideal to wear with off the shoulder tops and dresses, as well as with strapless summer dresses and tops.