Heel-to-toe length: place a piece of paper on the floor with one end against a wall. Stand on the piece of paper with your heel against the wall. Mark the piece of paper where your toes end with a pencil. Measure from the end of the piece of paper to the mark you created with your pencil and compare the measurement to our sizing chart. In this case it might be safest to go for the size up, rather than the size down