SIZING: The Swift FX Nano Nasal Cushion is available in three sizes -- Standard, Wide and Small. Any cushion size can be used with any Swift FX Nano or Swift FX Nano for Her Nasal Mask; so if you think that a different size might work better for you than the one you're currently using, all you need to do is purchase a new Swift FX Nano cushion and attach it to your existing headgear and short tube.
COMPATIBILITY: These nasal cushions will work with all Swift FX Nano & Swift FX Nano For Her Nasal Masks.
NOTE: While the fittings are compatible, Swift FX Nano Nasal Cushions are NOT recommended for use with Swift FX or Swift FX Bella Nasal Pillow Masks. This is due to subtle differences in the headgear shape required to position the nasal cushion properly against the face.