PM2.5 FILTER for Washable reusable cotton face mask Activated Carbon 10x

Second-hand smoke and pollen allergens. The second layer filters industrial pollutants, car exhaust. The fourth layer filter smaller materials. PM 2.5, best to protect your mouth and face from Dust, Haze, Allergies, Smoke, Pollution, Ash, Pollen, Gardening, Crafts, etc.

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