ResMed AirTouch F20 CushionThe supple memory foam adapts to the curves and contours of each face, creating a soft, personalized fit designed to reduce facial markings and skin irritation. It is also designed to deliver a light, breathable seal across a wide range of therapy pressures. Why is AirTouch F20 made from UltraSoft memory foam material? Most CPAP masks have silicone cushions but the ResMed AirTouch series features a patented memory foam material called UltraSoft. Its