The nasal CPAP mask is a type of continuous positive airway pressure (CPAP) mask that covers only the nose. The nasal CPAP mask is designed to deliver compressed air into the nasal passages to help keep the airway open during sleep. Nasal CPAP masks adapt and mold to a variety of different facial structures with silicone, gel, fabric or memory foam cushions. The pad of the nasal mask fits over the nose, creating a seal and delivering compressed air to help keep the airway open during sleep. Nasal CPAP mask is less bulky than Mouth Nose Masks and is one of the CPAP mask types that should be preferred first because it covers the nose, our natural breathing organ.