adidas Terrex CMTK Men's Hiking Shoes - Lightweight Waterproof Trail Walking Shoes for Outdoor Adventures, Camping & Travel

I ordered these in a couple sizes for fitment. My normal shoe size is 11.5, and just like you should for a running shoe, you should size up. I went up a .5 size, and they are a perfect fit, though some may find going a full size larger is preferred for more room in the toe box. My big toe is a bit longer than all my other toes, and many other styles of the Terrex shoes taper inward too much at the big toe (Such as the Terrex agravic). This shoe (CMTK) provides a little more room there. I have the Terrex CMTK in the normal and Gore-Tex versions and both fit the same. The only difference I notice is my feet stay dry in the wet with the Gore-Tex shoe and perhaps are slightly less breathable due to the waterproof membrane. I have worn these shoes for hours on end and largely on hard surfaces. The shoes remained comfortable (I might add without any real break-in) and provided adequate arch support. I typically wear aftermarket insoles in my work shoes, but these factory insoles were enough to keep me comfortable on long days of wear. I might consider swapping out for a more supportive insole, but I imagine most would get away with the factory insole. I am very happy with these. We'll see how well they hold up over time.11/21/19 update: Over a year later and still love these shoes. Again, I primarily use these outside of their intended offroad use so I have some accelerated wear in the sole at the center of the balls of my feet due to a minimal tread design with lots of void area. These are primarily worn on asphalt and abrasive concrete. I foresee maybe another year out of these, and another 2 years out of my gore-tex version due to wearing them less often. I will say the only negative to either version is that the laces come untied frequently when tied just snugly rather than tightly.