This is the best trail shoe I have ever run in, and I have tried the top ten or so over the years. The traction is superb. I have never fallen in them even on ice. I have broken my ankles in the past, so I require a sturdy shoe, and this is it. The Gore-Tex is perfect for running through mud and small streams. However there is still the balance of enough flexibility to make them fun to run in. But this is my second pair and I ordered the same size and they are way too large.