AirFit N20 InfinitySeal Nasal Cushions feature specially-designed 'infinity' loops and varying thickness levels that help reduce blowout while providing support at the sides of the nose and relieving pressure at the nasal bridge. InfinitySeal's soft, frosted surfaces feel more natural on the skin and maintain a secure seal even at the highest sleep therapy pressure levels.
SIZES: InfinitySeal Nasal Cushions come in three sizes -- Small, Medium and Large -- any of which can be used on any AirFit N20 or AirFit N20 For Her mask frame. If you would like to try a different N20 mask size you can simply purchase a different cushion size and install it on your current mask frame. Size on AirFit N20 Cushions is indicated by a large letter -- S, M or L -- printed on the base of the cushion.