Therm-a-Rest's NeoAir XLite sleeping pad combines maximum performance with practical functionality. With a renewed design that is tapered, and therefore more streamlined, the NeoAir Xlite sleeping pad provides maximum comfort while minimizing weight. In fact this new model is 15 percent lighter than the original! The NeoAir Xlite is also extremely warm, as it boasts an improved reflective layer that works to recycle body heat for greater heat conservation. To top it all off, the NeoAir is fitted with a patent-pending Triangular Core Matrix(TM) construction for maximum comfort.