ResMed N30i Nasal Mask - StandardDescription The AirFit N30i nasal cradle mask incorporates an innovative top of the head tube layout and a nasal cradle cushion positioned comfortably beneath the nose. This arrangement ensures a more restful night's sleep, regardless of your preferred sleeping position. The distinctive design is particularly beneficial for individuals who sleep on their sides or stomachs, effectively eliminating the discomfort commonly associated with other CPAP