"Pros: Lightweight and packs small Reasonable durable. Cons Included sleeping pad is heavy"
I have used this bag since 2010 for winter hiking and in most cases in the AdirondackS. I've experienced temperatures down to -20F which I think is the limit for what I'd feel comfortable in. I normally just sleep in a thick fleece base layer when sleeping in cold weather.I've never really taken the included sleeping pad into use since its thinner and heavier then the all season Them-a-Rest that I'm currently using. This can create problems during the night when I turn from one side to another, I might not notice that an area with no down has been exposed.Since the lowest temperatures I've experienced is -20F (-29C) and I'm always a bit worried that it will dip even a bit lower, I've been thinking about buying a -40F bag. But a -40F bag is around 4.5-5Ibs and this one is 3Ibs 14oz. without the pad.I'm 6'2" and 170Ibs and the long version feels perfect in length and width. The zipper is okay.The bag packs very small and is easy to compress. (its made out of regular thin nylon)