Bests & Worsts Reviews from Amazon

I bought this bag and took it out backpacking at White Sands National Monument in NM in Jan. A winter storm hit the day before I left and it was COLD out there. I'm not sure of the exact temperature, but I know that it was either high teens or low 20s. My waterbottle and my dog's water bowl both completely froze throughout as did the condensation on the outside of my tent, and my car was a big ice block when I got back to it in the morning. The bag actually did pretty well. I pulled the face hole as tight as I could and just cuddled down inside the bag without sticking my face out (it was too cold if I put my face out). I have Raynaud's disease and my hands/nailbeds often are very cold and turn blue in cold weather from poor circulation, but they were nice and warm inside the bag without extra gloves on. I was impressed by that. Overall I was ok, but not as warm and comfortable as I would have been at home in my own bed of course. It did it's job and kept my appendages warm enough and me alive in what could have been hypothermia conditions without the proper gear. My only real gripe about this bag is that it is huge when it's rolled up. It's too big to fit into the sleeping bag compartment of my NorthFace backpacking pack (so I imagine it's too big for any), and it takes up a very large portion of the pack when stuffed in the only way it will fit. Due to this reason I wish I would have gotten a different bag. It would be great for anyone who is just setting up their tent right next to their car, but not the best choice for a backpacker.