Thermarest Basecamp AF Sleeping Pad. Deluxe basecamp comfort, convenience and packability. Still sleeping on your ultralight backpacking mattress while car camping? Providing lofty luxury without the weight, the BaseCamp(TM) AF uses advanced AirFrame(TM) Construction, alternating foam and air channels to drastically reduce weight while amplifying loft with minimal bulk for bump-swallowing comfort. This self-inflating mattress packs small and comes with a new and improved stuff sack with easy-carry handle. Packs Small: Air Frame(TM) construction minimizes bulk for easy packing. Stable Comfort: Exceptional thickness with stabilizing foam support. Durable: Proven materials and craftsmanship offer exceptional reliability. Self-Inflating: Compressible foam core expands to inflate; add just a few breaths for your desired firmness.