-Ergonomic design &amp; strong close contact along the waist curve. <br>-It's light and slim, it will not show when worn under clothing. <br>-Uses mesh material to enhance breath ability. <br>-NEW enhanced 16 pulleys design with tight compression for waist size.(Upgraded from 13 pulleys to 16 pulleys) <br>-Includes the Velcro belt covering the 16 pulleys for tightening. <br>-NEW bidirectional special design. (Upgraded from unidirectional design) <br>-Wrap it around your waist, put a Velcro belt on it.