The Comfort Light Self-Inflating Sleeping Mat is a lightweight, backpacking option that offers superb comfort at a low weight and in a small packed size. The Delta Core technology removes 40% of bulk and weight without compromising on comfort. The multi-function valve flips over to allow fast deflation without fighting re-inflation as you go. This pad is a real alternative to air pads for many backpackers and campers who like to sleep comfortably. Features 3.1 R-Value is sufficient for late spring to early fall use. Two inch thick foam offers superb comfort and protects against being able to feel uneven terrain. Delta Coring removes over 40% of the foam to reduce weight and bulk without compromising durability. Woven 30D polyester face fabric has been chosen for its light weight and strength. Silicone print prevents your sleeping bag from slipping on the pad, and the pad from slipping on the tent floor. Flip-over multi-function valve for fast and easy inflation, deflation and fine-tuning of air pressure. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping.