AirFit N30 Cradle Cushions from ResMed are designed for use with N30 Nasal CPAP & BiPAP Masks. ResMed AirFit N30 Cradle Nasal Cushions sit comfortably and unobtrusively under your nose, so it's easy to sleep on your side or stomach. Cradle Cushions have soft, frosted surfaces that feel more natural on the skin and maintain a secure seal even at high positive airway pressure levels.