Kodiak mf bag obvious very high quality - Western Mountaineering Kodiak MF 0 Sleeping Bag

I have not tested this bag in cold temps yet, but it is by far the highest quality bag I have ever owned. I believe that the zero degree rating is probably much closer to being accurate than some of the other bags inflated and overstated ratings. It is very comfortable and roomy for me. (5'-8" / 175 lbs). One thing I do notice is how the foot and head area has more loft which makes sense because those two parts of the body get cold first.