This is a well constructed, lightweight (seriously), and all around comfy bag. The stuffing is a little thin for a zero degree, but it'll keep you comfortable with little more than your birthday suit on in 25+/-5 degree weather. I prefer the stuffing being the way it is due to the fact that I don't like half my backpack being filled by my sleeping bag. This rolls up nice and small (and lightweight), has a side pocket for your flashlight or wallet, zips down one side, and has a cord to pull the opening shut around your shoulders. It was easily worth the price I paid for it. Conclusion: Get it unless you are messing around with temps in the subzero range; it might be a good idea to get a bit more stuffing (or at least some long Johns) for less than 0 degrees.