This is the second King knee wrap I have purchased. They do the job. My doctor told me i had a torn meniscus and would have to have surgery sooner or later. That was before I started using the heated King knee wrap. It has done wonders for my knee. I use it twice a day and the pain is less and less. Compare the cost of the wrap to the price of surgery. Oh yea, don't forget the pain you will miss after surgery. I would choose the heated King knee wrap every time.