Tested them out on a trip Alaska. I usually wear rubber boots but by the end of a long day fishing my feet are pretty sore.  Rained 4 days straight and had waves sloshing in the back of the boat while fishing. My first thought as I was looking down at my feet submerged in water was it's going to be a long day with wet feet. We got into a school of salmon about then and I kind of forgot about it. After the excitement died down I realized my feet were bone dry, and they stayed that way for the whole trip.. I was worried about Keen Dry as these are my first pair but won't be the last.