There seem to be many older reviews suggesting you go up a size - it looks like that isn't relevant at all for this year's model! I'm a 9.5, decided on a 9 and I'm so glad I did, 10 would have been huge. As it is, the longest strap seems too loose. These are my first pair so I'm not sure if its supposed to be this way, maybe I'll get used to it. I just wish they held my foot a bit better. Otherwise very happy with them!