Took some breaking in. They were pretty stiff for the first few uses and I found my feet feeling sore and wishing I had my old sneakers to switch into. Now after some use they aren't too bad. I say the fir runs LARGE. I am a 6.5 but they were out and so I bought the 6 just to see and the 6 is big! I think I would have been ok with a 5.5 or a 5. So order down a half size or even a full size. They're ok. I'll wear them until they're broken down. I wouldn't buy them again if given the option though.