"My foot size is a straight US 6 or EURO 36. It was hard to know which size to purchase, as some of the reviews have said that this shoe runs small. I would have purchased a 36 (which is the sizing that the shoe comes in) but the website advertises them as 6s, 7s, etc., without any half-sizes. I purchased the 6 and 7 (6 came as a 36, and 7 came as a 37). The 6 (36) fit true to size! They are very comfortable, though the "blue" color is much more like a bright teal. I would have preferred it to be a little more blue, but the teal still works!"