On my second pair, first pair was tight so I went up a 1/2 size from normal on second pair. These shoes feel wonderful especially when I have to work in factory (12 hours on metal floor). Once you get sizing down they are great except for the fact that the springs start to make noise after a few months and it is quite loud. Happened on both pairs. Not sure if I will buy more until they can resolve this issue. If they do I will be back!