They're very warm, but not even a little bit waterproof it seems.  Actually kind of seems like they wick the water into the boot somehow from the toe seam because my feet get wet when stepping through very small puddles.

Also the calves are very wide.  If this was the prohibition, I could probably smuggle sizable bottles of gin past Johnny Law in the calves of these boots, but I have skinny legs.

Despite those two negative remarks, I wear them every day to work because they are warm and too expensive to waste.