I use one in the living room. I use the heating pad on my upper back, a cherry pit hot pack on my lower back and two cherry pit hot packs on my feet. Makes a huge difference (arthritis).
I had a long one. But it did not hit my critical shoulder/neck area. The long one is now in my travel bag, on the road it will be useful.
I now have this one (below) and it is very nice. It folds over my shoulders and the tab reaches my neck. There is something like rice/pellets in the rolled edge, so it keeps its shape.
I turn it on high until it gets hot and then turn it to low.
