Top quality, durability therefore likely. I had before them the Mephisto Alligator that lasted a long time and with whom I had long runs in the mountains. The "Rock" has an even better grip for the mountain but are less comfortable, strips proving more sharp for the same feet if they provide excellent support. So buying an expensive but very good investment. nb: to obviously use with sticks for walking in the mountains (it remains sandals, certainly the best by far but sandals anyway!)
