The Neoair Uberlite Sleeping Pad is Therm-a-Rest's most lightweight and packable air mattress which makes it well suited for thru-hikers, backpackers, and alpinists who demand high performance sleeping pads. The Triangular Core Matrix keeps the weight low while providing impressive stability and minimal heat loss, while the 2.0 R value and 2. 5in thickness ensure that you will get a good nights rest. When you wake up well rested this mattress will pack down to the size of a soda can and easily slip into your pack so that you can hit the trail.