Airhole Size Chart

All Measurements in centimetres

1. Measure your head size - around the fullest part of the head.

2. Measure your nose to mouth - from the middle of the bridge of the nose to the middle of the mouth.

CM	S/M	M/L	O/S
Head Size	50 - 55	55 - 60	N/A
Nose to Mouth	5.5	6	5