- 优惠日期：23 July 2020
- 3 layers of protection: non-woven outer layer + filter paper layer + skin friendly non-woven inner layer. Breathable and comfortable, low breathing resistance.
- The strip of nose bridge is adjustable, hides the side of nose bridge. More suitable for all face types.
- High elastic flat earloops. Does not strain the ears.
- Inner layer: skin friendly non-woven fabric. Soft and comfortable to reduce the possibility of skin allergies.
- Physical ultrasonic welding, densification of welding points, strong and durable, fine workmanship.