>>2455330I'm sure you can find similar products if you don't want milsurp but I have slept in these down to 0 F and never been cold. We didn't even have tents. Your tent is not a thermal device it's really just there to keep you dry.
Literally just put a sleeping bag inside another sleeping bag. That's all this is, a warm weather one and cold weather one but the cold is meant to be used with the warm as a duo.
Bivy optional, it's for staying dry but if you have a tent then isn't necessary. It has no warming properties
