Packing down to the same size as a water bottle, Thermarest NeoAir Xlite Regular Sleeping Mat is the lightest 3-season backpacking air mattress available. ThermaCapture Technology helps to trap a layer of heat between you and the ground, whilst the Triangular Core Matrix Construction helps to minimise heat loss. You can be rest assured to get a comfortable and peaceful sleep, thanks to its tapered design and reduction in the bulk and weight of a more traditional, thick sleeping mat.