1. Find a string or piece of paper
  2. Wrap it around a finger of your choice
  3. Mark where the string/paper meets
  4. Measure the length of the string/paper and match it with the ‘circumference’ on our chart below

Circumference (mm)

Size (US)

Size

55.7

7.5

15

58.3

8.5

17

60.8

9.5

19