All of these Shaper are Full Spiral Steel boned.Similar with traditional waist control.<br />Spiral steel boned firm compression waist cincher.It's the best choice to keep(shaper) your body Slim.<br />Please choose your size by the waist size，Read the size chart before you bid.If your actual waist is between two size，please choose the bigger size.<br />Size S = Waist(62-68cm) = Waist(24.5-26.7\