I think the title says it all.  I'm a pretty small person anyway and wanted something to smooth out the bulges for when I wear certain outfits.  This definitely does the job!  It is super, super tight.  In fact, it's an excellent lower back support for that reason!  It's not smooth, though, so you can't wear it under thin and/or untextured fabrics.  If you have a knit or something with a pattern, it's great.  I wear it under dresses a lot when I go to special events.  The other note is that the fat you squeeze has to go somewhere--I pictured it somehow disappearing, but actually it oozes out of the top and bottom.  I usually have my husband try to squeeze it down under the top section, though.  You can't assume your fat is going to magically disappear (imagine my disappointment!!!) but for what this is and what it does, I'm a huge fan.