The replacement Cushion for D100 Full Face Mask comes as a single cushion in your desired size: small, medium, or large. All three sizes fit on the D100 Full Face Mask.
Where do I find the size?
To find the size of the full face cushion, turn the mask to view the flat bottom of the mask frame and full face cushion. Near the edge where the frame and cushion connect, the user will locate a small circle with a singular letter embossed into the silicone flap. The letter represents the size of the full face cushion.