Our Postpartum Waist Trainer Is Made Of Soft 100% Skin-Friendly Nylon And Spandex/Elastane Fabrics, Which Are Soft, Moisture Wicking, Stretchy Elastic, Flexible And Breathable. Comfortable And Lightweight, The Body Shaper Can Fit Smoothly Under Clothes Without Any Rolling. Wearing The Shaper For Postpartum Recovery Is A Great Gift For Women Immediately After Giving Birth. The Body Shaper Can Flatten The Tummy, Reduce Waist Circumference, Support The Back And Improve Posture. Fabric Composition: 58.6% Nylon, 41.4% Spandex Lining Composition: 78.7% Polyester, 21.3% Viscose Fiber