Specification: Product Name: Activated Carbon Dust Mask (with Filter) Material: Nylon Material and Carbon Filter Color: Black、Gray Lifespan: Mask Can Be Used At Least More Than 2 Years. Need replaced Every 45 Days if you use Frequently, Can Be Replaced Every Three Months If Not Use Frequently. Features: Anti-Dust, anti-wind makes the breathing more smoothly, lined with advanced adsorption and activated carbon cloth filter, can effectively filter all kinds of exhaust gas and air allergens, smoke odor, dust, bacteria and other harmful substances. Usage: Best for cycling, running, and other outdoor sports, paintball and for carpentering, painting, cleaning work and also protection from pollen allergy. Instructions for Use: 1. Place the mask on the face, between the nose and chin to find a comfortable position. 2. Masks the rear hook & loop fasteners fixed masks. 3. Hand adjustment, pressing on the nose clip, adjusted according to the contour of the nose to the best location, we recommend pressing the nose, which can increase the tightness and stability, easy to fall down. 4. Exhale, hands touch the edges of the mask if there is leakage, if any, tightening hook & loop fasteners. Package Included: 1x Dustproof Mask（come with one pair of valves and filter） 2x valves 3 × Extra Activated Carbon Filters
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