The ResMed AirFit P30i Nasal Pillow Mask replacement cushion is for the newly released series of AirFit. This nasal pillow is designed to go hand in hand with the ResMed AirFit N30i series nasal cradle just in case you're not a fan of the pillow option. The P30i cushion is only compatible with the ResMed N30i and P30i and vice versa. They will not work with any other ResMed models. Furthermore, they are latex and comfortable to wear. Nasal Pillows: Dual-wall technology with trampoline action seals upon contact, dispersing air gently to the nose.QuietAir vent gently diffuses exhaled air, designed to minimize noise and disturbance for you and your bed partner works with the Universal N30i and P30i SpringFit Frame.