Features:Made of high-quality PVC material, soft, transparent, non-toxic, non-irritating odor, safe and comfortable.Check to avoid carbon dioxide retention.The oxygen connector is capable of connecting the oxygen tube and ventilator.The lightweight elastic belt is conducive to effective and comfortable use.The three-way oxygen tube is suitable for compressed air atomizers, which are usually used in hospitals, clubs, clinics, homes and other places where atomized liquids are absorbed. Specifications:Material: PVC Function:Negative pressure drain (suction) takeoverIt Can satisfy two people at the same for time inhaling oxygenScope of application: used to extract and collect body fluids.Size:as the picture showsColor: Green/Write(optional)Quantity: 1set Note:No retail package.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 x Tube(other accessories demo in the picture is not included.)