A patient interface device storage system includes a patient interface device structured to deliver a flow of breathing gas to a patient, the patient interface device including a mask, and a storage shell having an outer peripheral wall and a bottom wall which together define a cavity. The cavity is sized and configured to receive and hold at least a portion of the mask. The bottom wall includes a first attachment member structured to be selectively engaged with a second attachment member associated with a gas delivery device in a manner such that the storage shell and the patient interface device are coupled to and held by the second attachment member.
