Therm-a-Rest Trail Lite Sleep Pad The ideal balance of weight, warmth, comfort and durability. The Trail Lite self-inflating mattress offers an outstanding combination of comfort, compactness and value making it one of the best all-around camping mattresses available. Die-cut foam reduces weight and bulk while self-inflation adds convenience you'll appreciate at the end of the day. In addition, its semi-rectangular shape increases sleep area and makes for better, gap-free mating of other rectangular mattresses. Stuff sack included.