I bought this bag for myself and an ultra light for my girlfriend. Zipping the bags together is neat, but not fun for when its cold. I heard over and over again about how tight and uncomfortable these bags were for people. I find completely the opposite. We used both bags camping this weekend in low 30's and were completely toasty. I slept half out of the bag I was so warm. Its a great all around bag, and I wouldnt trade it for anything. Plus I think this thing will last the rest of my life, and its American made!