I started looking for a trail runner with an aggressive tread when I found myself slipping and sliding on steep descents on compacted trails. These fit the bill very well. They have amazing braking power and traction but it is coming at the cost of durability. I think I should be able to get a few months out of them running around 8000ft of vertical and 15-20 miles a week in the Wasatch. My only gripes with the shoes are that they do not shed mud as well as I would like and I have to stop and scrape it off with rocks or sticks every now and again and the other issues is that there is some bagginess near my arch which seems to just be a part of the construction as the upper is somehow welded to the sole. Overall a great value, good look, and suits my needs.