Remember: Most rulers have extra space before they start. Be sure you
start your measurement at 0!
Start with your ruler at 0 at eye level. Pivot around the nose. Measure
to the point of your chin. Use your thumb to hold the ruler position at
the point of your chin.
Once you have your exact measurement, find your size on the chart below.
If you're in between sizes, we recommend choosing the smaller size.
