HOW TO CHOOSE SIZE ?
With your mouth closed, be sure to measure from the bridge of your nose (between your eyes) to the tip of your chin. Measure along the side of your nose, not over the top.
A. If it measures more than 4.7in (12cm), choose size L/XL
B. If it measures less than 4.7in (12cm), choose size S/M
C. Generally, S/M is for women and teenagers, L/XL is for men.