- Efficient And Low Resistance Filter Material.
- Bullt in Electrostatic Material.
- With Better Filtration Efficiency.
- Higher Dust Holding Capacity And Longer Service Life.
- Cold Flow Exhalation Valve.
- Smooth Air-flow.
- Optional To Add Exhalation Valve To Reduce Exhalation Resistance;
- Accelerate The Elimination Of Heat And Moisture, And Improve The Comfort Of Long-term Wearing.
- 3d Design To Fit For Regular Facial Shape.
- Larger Interior Space, More Comfortable To Wear.
- Hidden Nose Clip Design.
- Built In Design, Safer.
- Plastic Wrapped Metal Material, Better Shaping And Lasting.
- Provides Best Fit.
- Flexible Strap With Ultrasonic Process.
- Built-in Spandex Yarn;
- Comfortable To Wear.
- Stretchable And Durable.
