< Mouth Mask >
For Mouth-breathers, if you find your Oral Interface easily fall out during sleep,
you need to use this little Mouth Mask at the initial stage to help retain OralInterface inside the mouth,
it will train you to change to nose-breathing duringsleep.
1. After taking out the Mouth Mask, place the seaming protruding sideoutward and the other side facing the face.
2. Place Oral Interface with tube from outward to inward side of the maskthrough the central hole.
3. Place Oral Interface into mouth properly.
4. Finally fix the Mouth Mask at the back of the ears.