1Good air permeability, can be connected to various oxygen machines and oxygen terminal equipment. 2Double nose pad design to ensure unhindered and sufficient oxygen inhalation, considerate design. 3It has a wide range of applications and is suitable for oxygen generators and breathing machine of various brands. 4Disposable nasal oxygen cannula, healthy and hygienic. Made of high quality material, safe and ecofriendly. 5Light weight and easy to connect. Various lengths of nasal oxygen cannula are optional, you can choose according to needs.