From Ecco Sierra LS I bought 2 pair. Both after a few days began each of the right shoe, to report to load with an unpleasant squeak. So I did not want to put it and could still return a pair. After I have been assured by the manufacturer that the Ecco Sierra II was touched up in this regard, I bought it. I'm wearing now regularly for several weeks and am very happy with it. I can only recommend.