In case of doubt, pick the bigger size! :)
Step 1: Place a white sheet of paper on the floor right next to the wall and place your heel on the wall.
Step 2: With a pencil, mark the end of your longest finger. Tip: ask someone to help you be more precise.
Step 3: Measure the distance between the wall (heel) and the end of the mark. To know the size of your AMEs, check the brand length in our size chart and choose the largest size if you are between 2.