I've used these for about two months this summer for casual wear, day hikes, and backpacking with a light pack (25 or so lbs). They are quite light and seem to have reasonable support for such a light boot. I've often gotten blisters with other boots, even after breaking them in, but I didn't get even a hot spot on a 12 mile hike using these boots fresh out of the box. They do run small. I got a good fit with a 9.5 US but usually wear an 8.5 to 9.0. I probably have fewer than 200 miles on these boots so I can't address durability but no problems so far. I like these enough that I'm going to get second pair to set aside before they change or discontinue them.