OMG Waist Tummy Breathable Body Shapewear Belt Corset Cincher Trimmer Girdle Material:90% POLYESTER And 10% SPANDEX 100% brand new and high quality*wholesale 4 Spiral steel bone, which is the fins material inside the corset. It's flexible and durable, as soft as plastic bones, can bend easily but recover quickly to origin. Hook and eye closures have 3 rows to keep tight fit as you lose inches; High elastic latex. Can be used for yoga, postpartum belly abdomen corset etc Shipping by ePacket, usually 7-15 business days.