Nice Red Oak! So my experience last night wasn't good, failure. I went back into my house around midnight, not because of the cold, just the opposite... to hot!
Things I learned...
1.a nalgene filled with boiling water does heat up the bag sometimes to much! My sleeping bag is cut so narrow at the feet that it was uncomfortable with the bottle there. Then when I moved the bottle in the middle it was to hot near my body... out went the nalgene.
2. Putting on the toes warmers, then down booties made my feet to warm. So now I'm feeling like I have to take the booties off, so I do. Feet were hot and I was afraid to take the socks off.
3. I really hate the narrow mummy cut bag, have had it for almost 10 years and used it maybe 20 times, still hate it. I'm a belly sleeper and like to stretch my arms out, so I wrapped my arms inside my jacket and stretched out.
So, I'm ready to try it out again with a few different ideas. whoo hoo! But not tonight, have friends over for a winter campfire! Stop by if your in the area of Plainview NY!