The nasal cannula use is for oxygen inhalation by nasal route.
The cannula are very light weight with their clear vinyl structure.
The curve of the tips are for the use by different patient face shapes.
The cannula are supplied with a PVC tube of 2 meters for a connection to a medical flowmeter, a humidifier or an oxygen generator (concentrator, gas cylinder or cryogenic liquid tank). They are available in adult and pediatric version.