Oxygen Nasal Cannula allows for supplemental oxygen delivery with increased patient comfort. Oxygen Nasal Cannula features soft and biocompatible nasal prongs and adjustable slide which allows the cannula to be fitted securely in place. Nasal Oxygen Cannula can be used with wall-supplied oxygen and then easily transferred to a portable oxygen tank or condenser. Over-the-ear design of oxygen nasal cannula maintains proper positioning of nasal tips while allowing for complete freedom of patient movement.