New for 2012: Light, compact and comfortable, NeoAir™ technology is a natural fit for backcountry seating. At only two ounces, the NeoAir™ Seat is as light as any Thermarest offer, yet it is also one of the thickest and warmest. The same Reflective Barrier™ technology used in NeoAir™ mattresses provides warmth when you need a break on the trail, then collapses to fit in the palm of your hand when you're ready to move again.