iLoveSIA Women's Waist Cincher Shapewear (Clearance) Polyester+Spandex Polyester 90%, 10% Spandex 3 columns hook-and-eye closure classic design with lace details flexibale boning anchors the cincher and prevents migration Idea for exercise or daily use., corrects posture. High compression. It helps to reduce 3-4 inches in waist when you wear it.