This Trail runner is nice for more groomed trails. The lack of rock plate in the forefoot is a big miss for Adidas. If you use these on any mountain trails with a grade one scramble you are probably going to feel the rocks quite a bit, and the grip on rocks is not so good. Stability is also not where it needs to be for rock, the feeling under foot is somewhat gummy. I have no issue with the performance on dirt or vegetation. These would be a good cross country shoe, but not for anyone looking for a mountain running shoe. The shoe is also on the heavier side, which could be reduced with the addition of a carbon fiber rock plate and reducing the midsole thickness. It would also be good if Adidas switched back to the older​ style mesh upper. I also suggest switching the shoe laces, or double-knotting the laces to keep them tied. These shoes are durable and that is a plus. If you are looking for a better trail runner you might consider trying a La Sportiva, there are models with rock plates and a very grippy sole for rocks.