I see they at REI , buy they , and like they so much that I go back the next day while they be still on sale and get a second pair . I want to be able to rotate they . but , the thread in the ankle patch come undo . REI give I a brand new pair right then and there . now , it be happen again with the other original pair , both shoe , same seam ! they need to use a much more beefy thread . I hate to have to drive all the way across town and back to exchange shoe . they be very comfortable , cool and give excellent grip .