1. Shape: Contoured, Folded, Duck
2. Can have valve or active carbon.
3. High filtration efficiency & low breathing resistance.
4. No toxic, no smell, no sensitivity and non-irritation to skin.
5. The breather valve makes your breath easy by reducing heat accumulation.
6. Adjust the bandage strip and the built-in bandage foam cushion to adapt to various face-shapes with comfortable sealing.
7. Prevent contamination from bacteria, dust, breathing or coughing.
8. It is widely used in medical-health departments, food industry and personal health, particularly for cement factories, food powder factories and textile factories for personal protection against air pollution. This mask also has best effect for protection wind.