These are so good. I ordered a sample and they are true to size. I am an 11 and they fit and are so comfortable. I told myself I was NEVER doing shoes again but I love these so much I'm breaking my own rules. They are super flat so if that's not your jam this shoe isn't for you. I love the modern shape too!
If you are on the cusp you can size up. If you have a narrow foot size down.