I have used this one time. I bought it last year on Amazon. Paid $139. Slept one night on the couch with it. It is soooooo comfy. I don't have a way to go camping so I'm selling it. I don't have a car now.
Here is what Amazon says:
Self inflating mat that inflates quickly through wide air channels and valves
Flat Valve Technology features low profile valves for inflation and ...