used for the first time on top of Kurodake. It got down to about -3 degrees, and I was sweating even in just underwear. I'm 6' 4" and 210, and I despite the "mummy" shape I had plenty of space to roll around and sleep on my side(s). Great bag. My friend was shivering in his other brand -5 bag fully dressed.
This review was written in the old system and had content requirements that are different than reviews written today.