1. 4 layers
of protection: non-woven outer layer + meltblown filter
layer + skin friendly non-woven inner layer. Breathable
and
comfortable, low breathing resistance.
2. The plastic strip of bridge of nose hides the side of
bridge of nose. More suitable for all face
types.
3. High elastic flat ear straps: will not strain the
ears.
4. Inner layer: skin friendly non-woven fabric; soft and
comfortable to reduce the possibility of skin
allergies.
5. Physical ultrasonic welding, densification of welding
points, strong and durable, fine
workmanship.
