You may be prophetic and will soon need them for your knees, I truly hope not.
Yes, I hope that’s not why I’m stocking up. But they would be very good for knees also!
I have spent several months with big heating pads draped over my arm and being unable to move. Or worse, having one that is just about the right size but falls off if I move at all. Once I discovered this little easy to use heating pad that keeps in place with velcro, I was in love.
https://www.amazon.com/gp/product/B07BHJ8VG9/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Here’s the link to the heating pad, if anybody wants it. They go for $69.99 on the thermophore website. For some reason they are only $25.68 right now on Amazon. But I’ve never seen them that cheap. This is the version where you can add an extra moist washcloth to increase the moisture level for those in dry climates. Or for those that just like the moistness. I don’t need it, but the price is so good and we will get the upgraded version. It’s cheaper than the one without it!