What Size CPAP Mask Do I Buy?

Most CPAP masks have sizing guides in their product description.

Click on the mask you are interested in.
Look under the description tab.
Print the size guide and measure your face for guidance. Click here for an example.

To increase your chances of a mask fitting, select CPAP masks that are labelled fitpacks. Some masks are purposely packaged as a fitpack. This means the mask is packaged with various size cushions. For example, a mask can come with small, medium and large cushions or small and medium, cushions. This variety ensures new CPAP users can find a good fit when trying a mask for the first time. Due to packaging, we cannot accommodate requests of giving multiple of the preferred or same size per mask.

Choosing a CPAP Mask

Finding the right CPAP mask can be tricky - it’s a personal choice and there’s no one-size-fits-all recommendation. Everyone’s face is different, so what fits one person comfortably might not work for someone else.

We strongly recommend doing your own research:

Read customer reviews
Visit a local CPAP store if possible
Try on different styles to see what feels comfortable

If visiting a store isn’t an option, consider starting with a Fitpack. Fitpacks include all cushion sizes (small, medium, large), giving you a better chance of finding a good fit. Learn more about Fitpacks here.

Please note: For hygiene reasons, opened masks cannot be returned. If you’re unsure, it’s best to test masks in person at a local CPAP store.

CPAP Mask Types

There are 3 main types of CPAP masks—nasal, nasal pillow, and full face. Each suits different sleep styles and breathing needs.

Mask Type	Covers	Best For	Pros	Cons
Nasal Mask	Nose only	Back or side sleepers, mouth closed	Good seal, moderate profile	Not ideal for mouth breathers
Nasal Pillow	Nostrils only (inserted)	Active sleepers, claustrophobic users	Minimal contact, lightweight	Can irritate nostrils at high pressure
Full Face Mask	Nose + mouth	Mouth breathers, nasal congestion, high pressure	Works if nose is blocked, high pressure	Bulky, more prone to leaks