The pillow has a great heat output, is really very warm and also evenly. Grading from 1.2 to 3 well noticeable. Attachment to the back works quite well, the closure on the neck but chokes a bit. Operation works well, maybe sometimes hakelig. Cable is pretty long and well and unplugged when you have to get up in between times. I've never used.
Length of the pad is also ok unless one is particularly great :) I found it when compared to the one I have now and the one I had in front of it, on the length of her more comfortable.