1. 3 layers of protection: non-woven outer layer + filter paper layer + skin-friendly non-woven inner layer. Breathable and comfortable, low breathing resistance.
2. The plastic strip of the bridge of the nose hides the side of the bridge of the 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.
Size: 17.5x9.7cm / 6.9x3.8in
Material: non woven
Usage: to block dust, smoke, pollen, dustproof, antibacterial, etc.