Please check our size chart on the each color's left size pictures, instead of amazon size chart; Choose the size based on your waist size Sexy waist training underbust corset, with comfortable wide shoulder straps, overlay with brocade floral pattern, bottom with w shape hemline, busk closure in front, fully adjustable criss cross laced back, come with modesty panel Spiral steel boned for waist cincher support and keep you in best posture which is flexible and durable, as soft as plastic bones, can bend easily but recover quickly to origin; If you worried about steel boned or not, you can test it with a magnet