This approximately 36x72 sleeping pad will self inflate (although not very quickly). An included mini pump can be used to speed up inflation and to increase firmness. This pad was used twice during a trip from NY to FL in the back of my car. The pad itself was comfortable and it did not bottom when I turned from side to side. My problem was my car back seats don’t lay flat and the pad couldn’t resolve that. I bought the pad on Amazon. One of the pictures posted is a screenshot from their site.