I've fought a lumbago with Körnerkissen microwave. The rise continued and renewed heat has me however so annoyed that I looked around for an alternative. So I have come to this heating pad and I have to say that thing is awesome and absolutely worth the money. even level 2 are on bare skin already a very pleasant heat from Duch and the very flat height of the product, and the good wearing comfort, it is only recommended for lumbago or other back problems. I do not want to be without this cushion. Each of the back problems or is struggling lumbago, the cushion should increase.