I received my NeoAir Xtherm in the mail in March of 2015 with the plan on using this sleeping pad for my winter adventures in Alaska. I have now had the chance to use for two separate multi-night trips while sleeping in a two wall tent which was pitched on snow in the interior of Alaska in April. Night temperatures were below 10* F. I have also used as a sit pad while on a frozen lake and snow in the evening and early mornings with temperatures around 15* and winds creating an even colder environment. Not only does this pad provide amazing comfort for sleeping, but at times seemed to be radiating heat back towards my body. I was very warm with no sense of the frozen ground below.
It takes 25 full breathes for me to inflate the pad completely. The stuff sack is designed to be used as an inflation sack to avoid having to blow up, but that feature seems silly and inefficient to me. I will cut off the additional material from the stuff sack as I will not be using this inflation feature and would rather remove the 1 oz of weight from the additional material. The material of the pad itself seems sturdy, our dog walked across it several times and I had little concerns about the durability of the pad.
The regular length sleeping pad packs down in the included stuff sack to the size of a nalgene water bottle. Listed weight is 15 oz. I weighed on my digital kitchen scale and got the following weights: pad alone 15.4 oz, pad with full stuff sack & repair kit 17.6 oz. When I removed the inflation portion of the stuff sack the weight was reduced by 1 oz. It is 72" long, 20' wide, and 2.5" thick when fully inflated. It has a listed R-Value of 5.7.
The length was more than I needed as in the past I have typically slept on a 3/4 length NeoAir. When I curled my legs up there was room for the dog to use the foot space of my pad. The width was comfortable. I was happy to find that the pad remained in place all night without much movement, which was nice as I was in a shared sleeping bag with two XTherm pads pressed together and there was little gapping between the two pads. I sleep on all four sides and am comfortable in all positions. I never have issues with my hips or shoulders pressing into the ground while side sleeping as I have had with other non inflatable pads.
Our Alaska winter conditions are quickly changing into spring weather and I will be switching back to using my smaller NeoAir Xlite pad for the summer. I am excited for the Alaska winter weather to return so I can use my XTherm sleeping pad in all winter conditions next year. I will continue to provide additional updates with further use.
This product is made in the U.S.A. Yay!
http://www.cascadedesigns.com/therm-a-rest/mattresses/fast-and-light/neoair-xtherm-and-xtherm-max/product