Used this bag for a four day camping trip in the White Mountains of New Hampshire and Vermont in February. Had to crawl out of my tent on several occasions to clear the snow off of my tent. There was frost on my bag when I woke up but the insulation didn't appear to be damp. The bag kept me warm and dry. I did wear a base layer though. It might not be the lightest or most compressible bag on the market but it is certainly warm, has a nice loft, and has the benefit of being synthetic instead of down (in case the down gets wet). The draft collars are super nice around the neck and zipper. I'm 6'4" and 200lbs. I got the long bag and it fit nicely with room to turn. I chose Mountain Hardware because of their bag sizing and the temperature rating. Overall I'm very happy with my purchase.
I really like the Mountain Hardware gear and this bag is no different. It's to heavy for me when it comes to backpacking more than a short one nighter. I got it for short hikes or truck camping with our Boy Scout Troop. Also Elk hunting, let the Llamas carry all my stuff!
"After 20+ nights at 0 or colder, and 12 nights at minus 20 or colder, still lovin it"
The day this came in the mail, it was actually minus thirty, so I slept in the backyard to really try it out. Slept like a baby. With confidence up I took it out for a 3 day, 2 night trip, with temps in the early minus 30's. No tent or bivy sack, just slept on the snow with 2 pads (with a nalgene full of hot water at my feet!), and the only bad part was crawling out in the morning. I won't lie and say at minus 32 it's all warm and cozy like florida beach camping, but it beat's staying at home, and I still have all my toes!