I just recently began running again, and as I'm still somewhat out of shape haven't put in any long distance jogs with the Faas sneaker yet. But what I will say is that it is pleasantly light weight and breathe able. No break-in time required. They did rub a bit on the back of the ankle at first, but I switched to lo-cut socks from the no-show style and *poof* problem solved. Bottom line, this shoe was exactly what I was looking for without spending a small fortune.