How can I regulate my temperature in a -15°C down sleeping bag when it is cold but not quite -15°C?
I have a down sleeping bag rated at -15°C. Used it at a previous hike where the temperature went down to -5°C. I was uncomfortably hot, and as a result didn't sleep well.
It is a mummy shaped bag, so the zipper only goes down halfway.
Tried putting my arms out of the bag, but my arms gets too cold.