Excerpt from Private Warren Hillman, a Polar Bear.

"How do you think we did at thirty below zero. And it stayed 30 below zero. And we had from a foot to... four feet of snow"
"I slept under nine blankets. I wore nine pair of regular socks. I'd have wore more but I couldn't get them on. And over that we had lumberman's socks, heavy wool, and they they come up to below your knees, and had an elastic band, and you'd fasten that."
There's more, but that's the idea.