Find your Perfect Prescription Mask
Measuring Your Face
Steps to Measure
- Face Width: Measure from the outer corner of one eye to the outer corner of the other.
- Face Height: Measure from just below your nose to just above your eyebrow line.
- Compare: Match your width and height to the mask charts below. Aim to be between Min and Max.
Quick Face-Width Checker
Use a straightedge ruler to measure across your face from outer eye to outer eye (where the eye slits end). Use this as a quick size cue, then confirm with the charts below.
| Width (in) | Width (cm) | Suggested Category |
|---|---|---|
| Under 4.00" | Under 10.2 cm | Small |
| 4.00" – 4.50" | 10.2 – 11.4 cm | Standard / Medium |
| Over 4.50" | Over 11.4 cm | Large |
Optional Head-Size Check
Quick tip: Wrap a string around your head along your normal hat line (above ears/brows), mark where it meets, then measure the string. Use the table below as a rough proxy for Small / Medium / Large, then confirm with face measurements.
| ORDER SIZE | HEAD SIZE | METRIC CM | US INCHES |
|---|---|---|---|
| SMALL | 6⅜ – 6⅞ | 54 – 55 | 21¼ – 21½ |
| MEDIUM | 7 – 7⅛ | 56 – 57 | 21⅞ – 22¼ |
| LARGE | 7¼ – 7⅜ | 58 – 59 | 22⅝ – 23 |
| X-LARGE | 7½ – 7⅝ | 60 – 61 | 23½ – 23⅞ |
Head circumference is a rough guide—always confirm with the face width/height charts below.
Measurement tips: Use a straight ruler (don’t bend or wrap it around your face), keep it level using a mirror, and ask someone to help if possible.
All our masks
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