I see some reviewers found that it ran bigger than the listed woman's comparable size.  I almost always wear a woman's size 8, and these sandals fit EXACTLY in the Mens 6/Womens 8.  Not too long or too wide at all!
My feet are a B width, and this sandal wasn't overly wide for them, either, like many unisex sandals are. So, as far as sizing, I dunno...I think they run exact.

The only criticism I DO have, is that the little nubs or bumps on the insole are a bit uncomfortable at first.  I have EXTREMELY sensitive feet, and can't wear many of the sandals that have so-called 'massaging' bumps like these have.  Fortunately, they did flatten out a bit after a few wearings, and it was never bad enough to cause blisters.

Other than that, the insides are nice and smooth, including the actual thong - a problem I often have with shoes in general, rough areas; my feet rub & blister easily and I am Type 2 diabetic, so I must be careful.