The replacement Mouth Cushion for the Mirage Liberty Full Face Mask come as a single cushion in your desired size: small or large. Both sizes fit the Mirage Liberty Full Face Mask.
The mouth cushion attachs to the nasal pillows of the Mirage Liberty, creating a hybrid cushion to provide therapy air to the nose and mouth.
Where do I find the size?
The size of the full face cushion is placed in two locations.
To find the size of the nasal pillow, look for the embossed letter found on the stem of either nasal pillow. The letter indicates the size of the nasal pillow. The removable nasal pillow does not have to correspond with the size of the full face cushion. The small, medium, and large nasal pillows are designed to fit the nasal pillow opening in both the small and large full face cushions to offer the user different options.
For help with selecting the proper size cushion, use ResMed's Mirage Liberty Hybrid Sizing Guide.