1Wide Application: This universal breathing machine nasal guard is suitable for use with many brands of ventilators, such as for BMC, for Philips, for ResMed, for Yuwell. 2Ergonomic: This nasal guard is designed to be very ergonomic, allowing you to wear it comfortably without any discomfort even when lying flat, improving your sleep quality. 3Promote Sleeping Quality: This nasal guard can improve sleep quality by 36%. According to the test, more than 99% of users can wear it comfortably and fall asleep easily. The average sleep quality is improved by more than 36%. 4Reliable Material: This breathing nasal machine is made of food grade polymer materials, without any harmful substances, safe and secure, lighter in texture, and more comfortable to wear. 5Detachable Design: This nasal guard adopts a detachable design, which is close to the user, making it convenient, making cleaning and cleaning easier, safe and secure, and natural and worry free to use.