so far,I have used it just for the 5 days of my six week program. It feels as though it may well deliver what it promises- I use it while I take a brisk walk. But a post after six weeks would be correct review. In the meantime, I gave it 4 stars. BECAUSE: after use you need to put your belt away covering the gel pads with the plastic covers provided. In the just five days, those plastic covers have become sticky!!!!! horrible!! and when you put your belt away with proper care as advised , the plastic shifts and the gel gets on to the belt!!!!! They must give extra plastic covers!! plenty of them. I wonder why no one has mentioned this to them.