A cannula cover fitted to a nasal cannula, such that the cover may be slid up and down the nasal cannula. In one aspect, when the cannula is in use, the cover may be slid to a position that contacts the users chin, thus comfortably securing the cannula to the user. In another aspect, when the cannula is not in use, the cover may be slid up towards the nasal prongs covering them like a protective pocket.
