I was therefore interested to learn that the Therm-a-Rest NeoAir XTherm was pitched at those sleeping in cold winter and alpine climates. Since the introduction of the R-value rating in sleeping ...

include 'small', 'regular wide' and 'large' as well as a women's version of the mat (which is both shorter and warmer, as women tend to sleep colder then men). As Thermarest claims, the NeoAir ...