water storage in sub freezing weather

[badkneesbro]

Another tip is to flip your nalgene upside down for the night, they freeze from the top down. So if they are upside down in the morning when you flip it over the ice don't block the top.

I use thermacare heat wraps and throw one in a dry bag with my water at night or when it is not on me or in my sleeping bag. I had one leak in my sleeping bag so I now always keep them in an extra dry bag to be safe.

Definitely going to check out the heat wraps. Also thinking something like "hot hands" might work well.