My shoe size is something between 7 and 7.5. I ordered 7 and it is just what I need with a little room for thick socks. Though, they are kind of narrow what came as a surprise for me. According to the pictures they looked like a very comfortable, rather wide shoes. Well, I had to use a shoe rule before I started to wear them, even though I do not have particulary wide feet. After two days with shoe rule 'treatment' they were just fine and ready to use. I consider it a fine purchase.