In recent years my arthritic knees have caused pain and difficulty sleeping.

Last year I cancelled a day in London with friends because of the thought of the underground with the walking involved.

This year I spent a day in London and even after a great deal of walking there was no pain at the end of it.

How can such a simple idea be so effective and comfortable?

To everyone involved a huge thank you! (I have recommended copper heelers to several friends).

Mrs. E.G. Northamptonshire.