Find your mask. Find your fit.
Compare two mask styles.
Measure your size, then choose your machine.
Which mask suits you?
Start with how you breathe at night.
Nasal Mask Best For
Covers the noseBest for those who seek a minimal, lightweight feel.
- Active Sleepers
Ideal if you toss and turn; the compact design stays secure.
- Nose Breathers
Perfect if you naturally breathe through your nose.
- Beard Friendly
Provides a better seal for users with facial hair.
- Unobstructed Field of Vision
Reduces claustrophobic feeling and makes it easier to read or watch TV before bed.
Full Face Mask Best For
Covers mouth & noseBest for maximum stability and versatile breathing.
- Mouth Breathers
The go-to choice if you breathe through your mouth or often wake with dry mouth.
- High Pressure Users
The wider surface area helps higher pressure settings feel gentler and more tolerable.
- Nasal Obstruction
Ideal during allergy seasons or when cold symptoms make nasal breathing difficult.
- Back Sleepers
Provides a stable seal for those who primarily sleep on their back.
One measurement.
Your size.
Choose a mask. Enter your measurement.
Your size appears automatically.
Measurement guide · not actual size
Measure your nose width.
Measure straight across the widest part of your nose.
- Face a mirror. Relax your face.
- Use a ruler. Measure straight, not around the skin.
- Enter the value below.
Select this option on your product page.
View the size ranges
| Mask / measurement | Small | Medium | Large |
|---|---|---|---|
| Nasal / nose width | 0.91–1.42 | Over 1.42–1.73 | Over 1.73–2.17 |
| Full face / face height | 2.91–3.39 | Over 3.39–3.86 | Over 3.86–4.33 |
The calculator converts centimeters to inches using 1 in = 2.54 cm.
Ready to choose your machine?
Choose your prescribed device, then select your mask and size.