Thread: Keeping warm at night.

If it’s a heli trip I use a summer sleeping bag inside my winter one (and a hot water bottle...)
A Good R rated mat makes a difference.
Balaclava with a beanie
Thermals and down jacket

I have found a mini hot water bottle (those small ones that are meant for babies) to work pretty well for me. They don't weigh too much in the backpack but do help to keep you warm.