[jniedrauer]

Related: I used ziploc bags as vapor barriers nested between two pairs of socks while on a multi-month winter hiking trip in trail shoes. It was extremely effective. I could posthole in deep snow all day in my running shoes and not get frostbite.

[klondike_klive]

How did you avoid damp-related problems like fungal overgrowth?

[jniedrauer]

It didn't end up being a problem. I washed my feet when I could, used thick wool socks, let my feet air out at camp, and that was enough.