How to measure your face size

 

Guide: This model's face size is 20 (Regular)

 

Face Size	Face Opening (in inches)
19 (Petite)	19
19.5 (Petite)	19.5
20 (Regular) -- fits most	20
20.5 (Regular) -- fits most	20.5

 If you are unsure of your face size, choose 'Regular' (either 20 or 20.5) which fits most people.