Features： 1、Package Included: Equipped with a nasal cover, a headgear, an adapter, and 2 plastic clips, which are complete set for breathing machine. 2、Good Sealing: Breathing machine nasal cover can provide strong stability and firmly sealing, creating a comfortable sleeping for you. 3、High Flexibility: Elbow adopted 360 degrees flexible rotation, and 45 degrees stereoscopic rotation, reducing the pulling of turning over at night. 4、Easy Installation: Breathing machine nose cover set is compact in size and light in weight, stable and portable, which is easy to install and use. 5、 PVC: Nose breathing cover set is made of high quality PVC material, without any harmful substances, safe and comfortable to wear. Specification： Item Type: Breathing Machine Nasal Cover Set Material: PVC Operating Temperature: -18℃ to 40℃ Storage Relative Humidity: < 95% Storage Temperature: -20℃ to 60℃ Package List： 1 x Breathing Machine Nasal Cover 1 x Headgear 1 x Adapter 2 x Plastic Clips 1 x Instruction