This boot is replacement for a brown, Gortex MW1569.which I had bought for tour to Alaska. I loved it, and this new one is even better!  It is a bit larger than my low-cut NB walking shoes, but I wear Costco KS wool socks and the fit is good.  It is a bit "taller" and provides more support for the ankles.  All my NB footwear have roll bars, which are great for stability. It's advertised as being waterproof, but haven't tested that yet. I have been buying only NB athletic footwear for years and still going pretty strong at 82.  These boots will go to Iwo Jima next year!