material: oxygen tube made of high elastic silica gel material, elastic, no deformation, no cracking, long service life, high temperature resistance Humanized design: can be adjusted to the appropriate position, let you find the most comfortable state Good compatibility: good compatibility, suitable for all of oxygen equipment, easy to install in most models. Small size: detachable nose, hygienic, economic and environmental protection. Easy to clean: the water can be removed to collect water droplets on the inner wall of the oxygen tube for easy cleaning. More security for users. Type: Oxygen Tube Material: Silica gel Size: 1.5/2/3/5 m Package Contents: 1 x Oxygen Tube (Only the above package content, other are not included.) Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed is 1-3cm.