This is the most amazing cincher I've ever had!  I've been wearing it pretty consistently for the past week and love it!
1. Great shape:  The main difference between this cincher and others is the shape.  Most cinchers are a tube and squeezes your underbust and hips too much while not squeezing your waist enough.  This cincher is cut and the boning is placed to give you an hourglass figure by allowing more room for your underbust and hips, while nipping in your waist.
2.  Comfortable sitting:  Another problem I have with most cinchers is that they hurt and dig into my legs when I sit down.  For reference, I'm 5'5" and long waisted.  This cincher dips down to hold in my lower stomach when I sit, but is cut high enough over the hips to not dig into my legs when sitting.
3.  Invisible under tight clothes and fine knits:  Normally when cinchers have a zipper in the front, I can always see it through my clothes.  This cincher is smooth and seamless even under tight and fine knit fabrics.  You can't see the outline of the boning or zipper through your clothes.
4.  No back fat:  Other cinchers I've tried either do not go high enough or are too short in the back.  This causes the dreaded back fat problem.  This cincher is the perfect high for me and comes up just to my bra band in the back for a smooth look under clothes.