Rating: 5 / 5
I had seen these at REI and for the price, knew I would never own one. Now fast forward to the REI garage sale and I find a factory defect return that wont hold air. I blow it up and notice the edge seam has a half inch opening where the heat seal didn't stay put. For $30 I had to give it a shot. Brought it home, hit it with an iron, and now have 50+ nights of amazingly comfortable sleep.
I'm only 5'9" and I got the large. I wouldn't want any smaller as this allows me to spread out comfortably as I roll around a lot when I sleep, and during winter trips it gives me somewhere to rest my arms. The horizontal baffles create more chambers to spread your body weight, and conforms better than vertical pads by far. The tacky surface is awesome, pad stays put on the tent floor, and keeps me in place as well. Packs down small, weighs 1lb. 4oz. Inflates faster than any other mat I've owned, although I use the neoair electric pump which eliminates condensation from entering the pad. Ditched the stuff sack pump it came with, weighed over 2oz itself???
The Xtherm radiates heat, and the pad usually inflates a bit more than when you went to bed due to this warmer air expansion. Even on snow. I fill mine enough that it just barely holds my butt or hips off the ground allowing it to conform to my body. Never fully inflate, unless you like sleeping on a board, and even worse if the morning temps warm up, it could pop.
Over a dozen nights on snow and below freezing temps, this pad has proven to be a winner.