They certainly keep my feet dry.  The best part is that they feel great.  I have 60 year old feet and always am concerned that shoes will hurt my budding bunion or be too tight across the toe area (I have wide feet at the toes.)I also have high arches. I wear a size 9 but bought a half size larger based on another review I read before purchasing.  I don't think that a size 9 would've been as comfortable.  I can wear heavy wool socks or thinner ones and the boot still feels great with no slipping in the heel.  I wish that I would've tried Merrell's years before.  I'll be sure and try some of their other footwear. Don't hesitate to try this boot!