Product description The filter is made from non woven fabric, filtration fabric and activated carbon cloth. Adopts activated carbon and breathable fiber, skin friendly, comfortable to use, great for long time wearing. HEALTH AND ECONOMICAL: Replacing filter can keep the inside of well ventilated, which makes you breath easily and healthy. It’s more economical and eco-friendly because you only need replace the filter when doesn' t work well. SAFETY PROTECTION: More effective isolation and protection, more at ease electrostatic adsorption particles. Replaceable activated carbon filter can isolate up to 99% of dust, pollutants, hazardous chemicals, smoke, heavy metal particles, etc. ERGONOMIC LAYOUT-CURVED DESIGN: With two ventilation holes built in both sides for better breathability and can match human face construction. Suitable for motorcycle, electric bicycles, hiking and other outdoor extreme sports enthusiasts. Size: 13.5cm x 9.5cm/5.31"" x 3.74"" (Approx.) Note: Due to the light and screen setting difference, the color of the item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Include: Only 10 filters
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