I have wide-ish feet in the toe area, but I ordered my true size (9.5 - sometimes I can wear a 9 in sandals) and they fit perfectly. These are absolutely the most comfortable sandal I've ever owned. Usually I go home and immediately remove my shoes, but at 10pm last night I realized I still had them on.

The ankle closure is not nearly as difficult to open and close as other reviews indicated. Obviously these people don't have to put on and remove dog collars often, because those are much worse.