Take a ring of your own which you know is the right size and place it over the four different diagrams below. Follow the instructions on the right image to make sure you are measuring your ring properly. Your ring needs to fit edge to egde with the outer line of the black circle. If you still have doubts about your size, you can find the exact diameter of all our sizes below in order to be able to compare with your own ring.
In case you fall between two sizes, we recommend you to chose the bigger one.