Double-layer, 3-inch thick rectangular air mattress provides a durable, cushioned sleeping surface for 4-season (4.7 R-Value) camping and winter base camps Air Sprung Cell construction mimics a spring mattress, for better stability and support; built-in redundancy means that if one layer punctures, the other side can still inflate Multi-function valve for fast inflation in just a few breaths (using integrated Airstream Pumpsack), one-way deflation for quick packup, and fine-tuning of air pressure Insulated pad features high-loft fiberfill and reflective fabric, to prevent heat loss and radiate heat back during sleep; non-slip 30D/40D nylon face fabric is durable and quiet Regular size measures 72 x 25 x 3 inches, packs to 5.5 x 11 inches, weighs 2.6 pounds; includes stuff sack and PillowLock patches for securing a Sea to Summit pillow to mat