These nasal cannulas provide the best quality and comfort. For patients requiring medium-low concentrations of oxygen, over the ear design maintains proper positioning of nasal tips while allowing for complete freedom of movement. Each (5 total) are individually packed complete with 7 ft. crush proof star type oxygen supply tubing. Soft tips won't split or crack the skin around the nostrils with prolonged use! These also come with a silicon end to better form to the outlet, so our cannula will not blow off, or get stuck on your regulator.