BMC F2 Full Face Mask -BMC-FM2Quiet vent design promises your bed partner a sweet dream and the ergonomic cushion design takes care of your feelings.FeaturesConvenient operation F2 is integrally designed so that your family members can operate easily. Peaceful rest Soft cushions and quiet vent promise you and your family a more peaceful rest.Multifunctional portsThe built-in ports make oxygen input or pressure titration as easy as possible.