This waist trainer instantly reduces tummy size and provides back support. The 25 spiral steel bones promote weight loss, helping to create an hourglass shape and flatten the stomach. With regular use, it reduces the waistline and promotes a confident posture. Made from firm latex with flat seams, it's designed to be worn underneath clothing and provide up to 3 sizes smaller results instantly. The waist trainer also helps to support a healthy lifestyle and mind. It has a soft cotton exterior and interior lining, 3 rows of hook-and-eye closures, and Flexi boning that anchors and prevents migration. To get an accurate waist size, measure across the bellybutton and refer to the size chart.