After planning a very last minute mountain hiking trip, I realized I didn't have appropriate footwear(the boots I had didn't fit correctly) so a week before the trip, I bought these. I wore them to work everyday hoping to break them in a little, turns out, I had nothing to worry about. These are by far the most comfortable boots I have ever owned, after hiking straight up (and down), no blisters or hotspots and because of the wonderful wide toe box, my toes didn't hurt either(did I mention the extremely steep trail), they also provide plenty of ankle support. As advertised, they are waterproof, I sank in ankle deep mud/water multiple times and my feet stayed dry, they don't breathe as well as other hikers I've had though so definitely wear wool socks. They do run small, I usually wear 8 but got 8 1/2 instead, any smaller and they wouldn't have fit. These boots are my first pair of Keens but definitely not the last!