Keen Newport Cinch Sandals

I don't understand how these are a size 6. I'm a 7-7.5, and they're almost an 8. I usually need a 7.5 for the wideness my flat feet create. Almost makes me feel like I ended up with men's shoes, but I don't think that's possible. I believe these are unisex, so a men's 6 and women's 8? They're very comfortable and work as well as other Keen shoes.