The XTherm NXT is the best choice for alpinists, long-distance trekkers and ultralight travelers facing cold weather. The warmest inflatable mat in its class. Patented Triangular Core Matrix™ construction and ThermaCapture™ technology provides an R-Value of 7.3 while minimizing weight and bulk It is easily packable to the size of a one liter bottle, very comfortable and light. The lower part made of 70D nylon fabric resists punctures and can be used with confidence even in more demanding terrain. Easy inflation and deflation: WingLock valve - for easier inflation and faster deflation. The valves are enriched with one-way flaps and maximize the air flow. MAX series: rectangular shape with extra width provides more comfort not only during sleep (only for XTherm NXT MAX) The package includes: Inflatable bag, practical packaging and repair kit.