CANNULA NASAL ADULT WITH 7' TUBE CS/50 AirLife® Standard Nasal Cannulas The AirLife® cannulas offer an angulated, flexible lip plate, which provides comfort at the tip of the nasal region, with beveled tips to provide a softer edge. Disposable cannulas are curved and are available with flared or nonflared tips. Packaged separately or with varying lengths of oxygen tubing.