I bought it and used it for a while. It really worked. After I tied it, the fat on my waist immediately flattened and my appetite decreased. There is only one disadvantage: we must persist for a long time, we can't get rid of it, and we will rebound as soon as we get rid of it. Moreover, it is particularly hot in summer, with a lot of sweat on my waist, and it is easy to get a rash.