It is indeed cool - featuring some of the best ventilation I've ever felt on a shoe. It has good cushioning without sacrificing firmness for toe-off, and has held up under my very moderate regimen (currently 2-4 miles, 3-4 times per week). I am a mild overpronator, and I got the shoe to help with that problem. It seems to work, as the soreness in my ankles (present with less structured shoes) is nearly gone. I'm working my way up the pyramid, so can update this post based on higher mileage at a later date. The only complaint was that I got mine in a "wide" width, which was a perfect fit at the ball of my foot, but as a result, the toe box was a bit bigger than I would have preferred. Still, it's not a deal-breaker. Very good shoe overall, would recommend it.