The AirFit N30 CPAP Mask is exceptionally quiet and lightweight with a dual-wall nasal cradle cushion that adapts naturally to movement during sleep to maintain a secure fit particularly for side sleepers. AirFit N30's QuickFit auto-adjusting headgear provides gentle stability with minimal facial contact and a special side clip to fine tune your comfort. AirFit N30 is available in three sizes -- Small, Medium or Small Wide -- to fit a wide range of patients.