Take a Rain-Bow
Fizzy G's run true to the standard European size and are available in medium width only.
A great way to measure your foot size is to draw it on a piece of paper and measure the distance between your big toe and your heel in cms. Then follow the above chart under the section length of foot and order your size.
Choose a snug fit – natural leather expands by about half an inch to the take the shape of your foot after a week or two of wear.