Quiet has never sounded any better. The Sylent™ nasal mask is designed with the entire sleep experience in mind. Key features Self-adjusting flexible forehead support allows for a wide range of angle positions Position of forehead support can be adjusted vertically to 3 different heights Cushion inflates to facilitate sealing therefore requiring less headgear tightening Exhalation port design allows for a silent wearing experience Multiple size cushions available All cushion sizes fit just one mask shell