Waterproof - yes. Super rugged - no.
Verified Buyer Reviewed by Jef from Mammoth Lakes, CA on Thursday, November 3, 2016
I walked these about 12 miles last weekend in the Eastern Sierra in search of a D7 buck, and they kept my feet warm and dry walking through slush and snow. The soles are not super rugged / tough - you can feel rocks poking your feet as you tread on uneven ground, but they are lightweight. Also my feet did sweat a bit since the Thinsulate blocks AND retains moisture. But for the price I paid these are a tremendous value. I got size 12 and they run maybe a bit big - but that's probably good as they can accommodate thick socks.