The Therm-a-Rest BaseCamp AF Sleeping Pad is a self-inflating mattress for car camping with the whole family. Only one of you can sleep on it though, the rest of 'em have to get their own. The AF stands for AirFrame™ Construction, which alternates foam and air channels to drop weight while giving plenty of loft. Talk about comfort underneath the body. When your trip is over, it packs down small, so you can load it into the trunk of your car, leaving extra space for your cooler.