I used it. It seems to be recommended by women's magazines or stars. Very popular on Taobao. It's uncomfortable to wear, it's hard to walk, and my calves are sore. In short, I don't see any weight loss effect. I haven't worn them for a long time, and the quality of those shoes is not very good. They will deform when worn. There are many acupoints on your feet, so you'd better not wear strange shoes to make your feet comfortable. There are many ways to lose weight.