Getting The Best Fit
Finding the Right Mask and Fit
A mask that doesn’t fit well can reduce the effectiveness of your treatment. It can also
cause you to continually re-adjust the mask or over-tighten the headgear. This may reduce
your comfort level and how long your mask can work effectively.
Your mask should fit lightly on your face, and you should only feel a minimal amount of
pressure. Headgear should be secure but not too tight. If your mask has a forehead arm
or adjustment feature, adjust that first. Adjust straps to minimize air leaks, especially into
the eyes. Your mask should be the smallest size that fits, without pinching your nostrils.
A tight fit is not necessary for effective therapy. Adjusting the mask too tightly is not only
uncomfortable, but it creates folds in the material, which creates a path for leaks. If you
experience leaking, try loosening the mask. In general, air should leak a minimal amount
between your face and the mask. However, a small amount of air will leak out from the
mask where the exhalation ports are located. This is normal.
Tips for your fitting
Therapists are trained to properly fit masks, however, your facial features change
significantly during sleep. Ideally, your mask should be fitted while you are in a sleeping
position and with air blowing at the prescribed pressure through the tubing and mask. If
you use a full-face mask and wear dentures, remember that if your mask was fitted with
your dentures in, your mask may not fit properly if worn without your dentures.