REI Co-op  Magma 10 Sleeping Bag - Men's

I love this sleeping bag, I bought it with the sister bag magma 17 women's thinking that it would be perfect for zipping together and making a nice double bag for my wife and I. I wasn't impressed with the way that these fit together and the zippers kept on unzipping throughout the night. I love this sleeping bag for its standalone purposes. It's nice and warm/comfortable, very compact and extremely light. It does slip around quite a bit because of the soft outer fabric. I am curious if this bag will be too warm this summer as this is really made for shoulder seasons and since I am in British Columbia it might be just perfect. Great price for a 850 down bag. Nice work REI!

TL,DR: Not as warm as advertised, so buyer beware, but still a great bag if you can get over that. I would rate it at 20 degrees instead of 10, which is also what Outdoor Gear Lab decided, meaning that the comfort limit is right at 32 degrees. On nights that were below freezing, I started waking up chilly. This bag is very well made, and for the price/weight/warmth is a great deal. However, in order to achieve this REI had to make some compromises. I took it on a 5 day backpacking trip in the smokies in late February, with lots of rain and snow and nighttime temps getting down to the low 20s at higher elevation. Based on that, these are the shortcomings I could identify: -Instead of full zipper baffles, a stiff piece of excess fabric folds down over the zipper, insulating it with the down from the main part of the sleeping bag. This works pretty well for the most part, but I found that it would open up if I spread out and stretched the bag horizontally. This made me really cautious about laying any way but straight and narrow in the bag on the colder nights. -Variable baffle spacing sounds great in theory, but in practice it left me with cold legs in the lower temps that made the bag feel less warm overall than it was, even when I was overheating around my head and shoulders. I wish the down/baffles were evenly distributed through the bag - that said, for a minimalist backpacker, a down jacket zipped up around the foot box could probably make up for the difference. -The draft collar was the least impressive part. Because the zipper curves up towards your face, the draft collar covers your right side very well but stops several inches short on the left, leaving a grapefruit sized hole in draft protection. I definitely noticed cold air flowing through here and had to plug it with extra clothes to stay warm, which was really annoying and seemingly an obvious issue. If not for this I would have given the bag 4 stars, in spite of the temperature rating issues. -This is my first down sleeping bag, but it seemed somewhat clammy/nonbreathable in comparison to the synthetic bags I've used in the past. Not sure whether that's the treated down, the pertex fabric, or just the temperatures. -The down seemed a bit underfilled, so I had to be careful of not pressing on any of the exterior walls of the sleeping bag for fear of compressing the down. I woke several times to cold spots formed in this way. For reference, I am 24, 6' tall, 165 lbs, probably an average warmth sleeper but I'm lean so I don't have much built-in insulating ability. The regular fit comfortably snug but I got the long to have room for clothes and water bottles in sub freezing temps. Since I'm not likely to go much below freezing in this bag in the future, I wish I would've gotten the regular.