I would not recommend this product. The car must be kept running in order to have the blanket heat up. Even using the aux power the blanket is warm but another blanket or jacket needs to be put on to keep you warm. The size that i got you either have to choose your bottom half or top half to be warm. The adapter that is attached to the blaket is heavy and gets wrapped around the gear shift. It is a good idea but just does not heat well.
This is probably my mistake as well as the manufacturers, but I was expecting a blanket I could plug into the wall and use in the home. The "Auto" part of the description, I thought meant automatic, not automobile. As a result, we had to scramble to find a converter to allow the blanket to be used in the home. It was barely warm, when it did heat up - not satisfactory at all.