User Review: REI Kilo Plus 0
Fill: 750 fill down
Temperature Rating: 0 degree F
Weight: 2lbs 10oz
Price Paid: $279
OK, this review is from somebody who knows what they are talking about. Don't be scared by the reviews that claim this bag is not suitable for its temp rating. I have used this bag in single digit temps, wearing only a layer of midweight thermals and a hat... I was extremely warm and cozy. So warm I had to take my hat off... and I am not a warm sleeper. I would be comfortable using this bag in below freezing temps if I had on enough layers.
This bag is very light and packs small. The longest trip I have used this bag on was only four days, but the shell did a great job of managing tent condensation and I was not able to air it out due to rain. The shell is light, but I notice some feather leakage from time to time. Which is why I don't think this bag is a 5/5, but I have never owned a down bag that does not leak feathers.
All in all, for the price... this bag performs above what you pay. It is structured so that more down is on top where you need it and it is compartmentalized so down does not shift. I would recommend this bag, but I have seen some other manufacturers that have bags with a Pertex shell which they claim is leakproof (feathers). I don't know much about Pertex while writing this, so look into it and see if it is breathable and light. I would guess it is, so it may be a better option only if it really is leakproof.