The Comfort Light™ Self Inflating Mat is an excellent lightweight, backpacking option that offers superb comfort at a low weight and small packed size. The Delta Core™ technology removes 40% of bulk and weight from the 2" thick foam to keep your nights comfortable. The multi-function valve is a low profile, high volume valve that flips over to allow fast deflation without fighting re-inflation as you go. The Comfort Light Self-Inflating Mat is a real alternative to air mats for many backpackers and for campers who like to sleep comfortably.