More than 7 years ago, I bought knee support and back support from the chemist. Until now, I still use them when I have sore knee or sore back. They relieve the pain after you wear them for a while. Recently I suffer from sore ankle. I bought other product from the brand which is cheaper. It is not comfortable and effective at all. Now I have to go back to buy products of Thermoskin. I know it is always good from Thermoskin.