I have had these shoes for a few months now, and I love them. I use them for work at the moment, and I work in a Desert environment, these shoes have great ventilation and have held up really well in the rough terrain I currently put them in. The tread and soles have held up longer than any other hiking shoe I have wore out here, and the ventilation is beyond compare. As you can imagine, working in a hot arid environment your feet get hot, I can actually feel the air blowing though these shoes, and it is a great relief, now with that said my feet still get hot and sweat, but the fact that these shoes do allow air flow it does help a lot. Thanks Merrell for a great product that actually does what it says it does.