This innovative product helps to keep your favorite brand nasal cannula clean when not in use. Simply place any adult sized over-the-ear nasal cannula in this protective cover. The patented design keeps the cannula prongs from contacting any of the interior surfaces of the cover. The easy to open and close cover also saves you time and money by eliminating the need to constantly replace your nasal cannula. CLEANING: Product is dishwasher safe. It is recommended to be cleaned at least once a week. USE: This product is designed to work with all standard two prong over-the-ear adult nasal oxygen cannulas with nasal prongs and reservoir up to 2.5 Inches wide. SIZE: Product is 4 x 2 x inches in size. NOTES: This product does not include the nasal cannula shown in some photos. US Patents: 10786639, 9731038, 8887919.