waist trainer is made of 55% Nylon 45% Spandex fabric. The material is stretchy, soft, breathable, skin friendly, not stiff and itchy. It’s comfortable enough to wear & keep you supportive all day. Unnoticeable under clothes& suitable for party, wedding, dating. It’s perfect for daily, postpartum, tummy tuck, lipo, surgery. Our tummy control shapewear control your body maximally, create you a slimming figure everyday.