A lot of reviewers who are Ahnu fans have struggled with this shoe, and I am among them. I'm a size 8 with a low arch and a narrow-to-medium foot. These are about a half a size too small, I think, and they do run wide for Ahnus. If you wear a thick sock and really tighten up the laces, they are pretty comfortable. I walked around in them all day and my feet felt great. However, I still had that slightly loose sensation at the end of my toes. I'd recommend ordering your regular size and a half-size down, and see which one fits best. I wore mine outside, so I'll keep them, and try to put a sheepskin insert in to give me that snug fit I like.
They are on sale for a great price, so if you can find the right fit, they're a total bargain.
the black is more of a dark, dark charcoal, BTW. Cute shoes though, and they make your feet look smaller. I got the brown as well!