Did a great job of keeping my feet warm in Antarctica. However, they were a little too snug and I ended up with a nasty case of black toe on the right foot. Limping back to the plane from the Russian station to the Chilean station, one of the Russians took pity on me and gave me a ride in his truck. So I can say that I have hitchhiked in these from Russia to Chile!

I made sure they were thoroughly broken in by wearing them several days before the trip, but I should have spent more time on slopes so that I would have noticed that they didn't work for me going downhill.