The Mirage Quattro Full Face Mask covers your nose and mouth, providing you with effective therapy even if you breathe through your mouth. Proven Mirage dual-wall cushion with Spring Air technology lets you move around while you're asleep. The unique MicroFit dial lets you easily adjust the forehead support to find the fit that best suits your needs. Set-it-and-forget-it headgear clips and slots save optimal fitting settings and allow for quick headgear removal. This mask comes complete with the mask, frame and a one-size fits all headgear It is available in four sizes - Extra Small, Small, Medium and Large.