Colour Name:5 Filters Features: Compatible with majority of dual valve dust Masks available in the market. Replaceable active carbon filters isolate up to 95 percent of dust, pollen, hazardous chemicals, fumes, heavy metal particles etc. Unique ventilation design, excellent permeability, double air breathing valve, air resistance is smaller, smooth breathing. How to Replace: 1. Open the mask, revealing the internal valve filter. 2. Follow the open instructions on the valve, counterclockwise rotation of the valve, separation the air valve. 3. Take down two valves, remove the filter. 4. Change a new filter, follow the close instructions on the valve, clockwise rotating the valve and replacement is completed. 5 Layers of filters 1. Breathable molding layer: Block large particles and protect filter layer 2. Activated carbon layer: Remove odor and adsorption of chemical pollution 3. Sprayed cotton layer: Filter micron dust particles 4. Enhanced filtration of 0.03 micron PM2.5 particles 5. Non-woven inner layer: Comfortable and breathable Package includes: 5 x Active Carbon Dust Mask Filter Note: The filters are not washable, and recommend to replace per month. You can change according to your actual situation.
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