The ResMed AirTouch N20 features the ResMed UltraSoft™ memory foam cushion, a breakthrough in mask comfort technology. This innovative new cushion conforms to the unique contours of each face for a truly personalised fit. It is also designed to deliver a light, breathable seal across a wide range of therapy pressures. Features: UltraSoft™ Memory Foam Cushion 30-Day Disposable Cushion Design The ResMed AirTouch™ N20 cushion uses the same frame and headgear as the AirFit™ N20 cushion, meaning that the cushions between the two versions are interchangeable. Existing users of the ResMed AirFit N20 can purchase the UltraSoft™ memory foam cushion to try on their existing mask, and users who purchase the ResMed AirTouch™ N20 can purchase the silicone AirFit™ N20 cushion to try if desired. Due to the nature of the memory foam, it cannot be washed like a traditional mask. The memory foam can be wiped daily, but the cushion is only intended to last 30 days before needing to be disposed and replaced.