"The AirFit F20 is part of the ResMed AirFit family. This is a full face mask designed to cover the nose and mouth in order to provide optimal sleep therapy. The AirFit F20 is Equipped with an innovative new cushion design, InfinitySeal Cushion Technology and a variety of other design enhancements. The InfinitySeal™ full face cushion starts at the bridge of the nose and falls below the mouth to provide CPAP therapy to the nose and mouth. This new cushion features specially-designed “infinity” loops and varying thickness levels designed to reduce blowout and provide support at the sides of the nose. The frame is soft and flexible that includes integrated padding. The result is a mask that comfortably moves with you and provides a reliable seal throughout the night, regardless of sleep position. The AirFit F20 is the most technologically advanced full face mask ever. With this simple design, each size cushion can easily be clicked into the standard AirFit F20 mask frame. The AirFit F20 Full Face Mask is similar to the AirFit F10 Full Face CPAP Mask with Headgear. To increase the comfort of the mask ResMed added padding to the mask frame and headgear making it soft and more comfortable."