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.