Lightweight, durable and extremely warm, the Therm-a-Rest NeoAir All Season mattress is the ultimate solution to year-round backcountry comfort. Patent-pending Triangular Core Matrix technology creates over 100 internal cells and Reflective Barriers trap warm air, resulting in an incredibly high R-value without the weight or bulk of conventional insulation. Durable fabrics and construction give the All Season mattress the strength to stand up to rugged conditions throughout the year. Pump sack and repair kit included.