I order 2 pairs of these in an 8.5 and then a 9 but returned them both. They seemed really nice and well made, but just wearing them around the house for a half hour my feet got kind of sweaty. By no means am I a sweaty person or usually get sweaty feet. The real problem I had though was that the right shoe of the 8.5s was too small(or my foot was too big). I haven't had this problem with any other shoes or boots. Then I order a size 9 thinking that would fix the problem. The 9s were WAY too big, and for a hiking shoes you need a good fit. They were too loose and even when I tied them really tight there was just too much room for my feet to slide around. So I had to return them. I might give keen another try maybe I just got a weird pair. My daughter has some keen sneakers that I love and she can play outside in them and they hold up really well and don't really look dirty at all.