Abstract: A nasal prong or nasal mask cannula system which has at least one of the following features: to enhance the cannula tubing at the port base of the oxygen source to minimize “crimping” and diminished oxygen delivery; to design a cannula that will expand in length as needed and shorten as needed without loss of pressure (PSI) of oxygen from start point of oxygen source to patient; to provide a device such as a clasp or clip attached to the cannula which clasp or clip may be attached to the patient's clothing to relieve pressure or weight exerted by the cannula tubing on the patient's ears and keep the cannula close to the patient's body; to provide storage means for storing extra length of tubing; to provide a warning device to alert the patient when oxygen levels or oxygen flow rate are low or that the battery energizing the warning device is low; to provide a timing device to alert the patient to change the cannula after a prescribed period of time; to provide means for stylizing or personalizing the cannula