I ended up going down a half size-I normally wear an 8 1/2. I called and spoke to a sales representative that said 99 percent of people size up. I guess I am in the one percent and am happy I sized down! The reason-I personally don't like to have too much room in the toe area when wearing any sandal. It is definitely a preference since it doesn't look bad-I just have a fear of tripping over them (someone *might* be clumsy).
Initially they were pretty tight on my foot but quickly seemed to show a little give. In the shoebox, they provide instructions on how to loosen them by pulling the leather outward. My first day, against my better judgement, I wore them for eight hours. I feared blisters! They weren't bad at all, although still a little snug on the top of my foot. I have heard that wearing a sock with the sandal will help, which I might try this weekend.
Overall I would recommend them. I really want red or black next. Do you own Saltwaters and if so, what color should I get next?