I just got back from the first trip where I took my new Neoair xlite which replaces my Prolite. The good news is that I think that the slightly higher R Value made a difference for me. In mid-high teens with the Neoair and my Marmot Helium, I wasn't toasty warm but I was OK. In similar weather with my Prolite I was pretty cold. So that's good. On the negative side, I was totally paranoid about the Neoair the entire trip. Maybe it is just being new to the pad but it seems SO fragile. And the idea of popping it and not having any insulation with temps that low made me too nervous. So I'm thinking of taking a supplemental closed cell foam pad the next time I go out where temps are expected to be anywhere near freezing or below but, of course, that entirely eliminates the weight benefits of the neoair. Am I being irrationally nervous here or is taking a second CCF pad smart in winter conditions?