It took me awhile before I purchased these Skechers, I guess because of the price. I have lower back pain, and have suffered with it for many years, standing for long periods of time and too much walking is a problem.  I love tennis shoes, always have. So I purchased these Shape Ups. When I first put them on and started walking around in them, I felt like I was going to tip over, I guess because of the way these shoes are made. I went shopping to test them out and parked far away from the stores to see what this these shoes were all about. I have to say they are very comfortable. Now I don't know about the promote weight loss thing, and my legs didn't feel any different, but I can tell you my back did not hurt when wearing these shoes.