The AirTouch N20 features ResMed's softest cushion ever, the UltraSoft with Memory Foam. These UltraSoft Nasal Cushions are the standard cushions designed for use with all AirTouch N20 & AirTouch N20 For Her CPAP/BiLevel Masks. They can also be used as an alternative to the InfinitySeal cushions found on AirFit N20 & AirFit N20 For Her CPAP/BiLevel Masks.