Size Name:1 Mask+3 Replacement Filters Qianyou dust mask with activated carbon filters is protective equipment that can be worn with comfort again dust, fume, smosk, etc. Ideal uses for breathing mask include but are not limited too: Urban Cycling Mountain biking Biking Running Snowboarding Skiing Speed Walking Industrial Dust Emissions Lawnmowing Exhaust Pollution Painting Mowing Hiking Features: 1. Made of high-quality mesh shell construction, diving fabric, nylon and activated carbon filters. 2. Super filtration: Filter 99% polluted air, dust, particles, pollen, smoke, and fumes. 3. Breathable and durable air mask fits your face well. Excellent design makes you feel comfortable. 4. With the adjustable nose clip, it is 100% seal so it also prevents the lens of your glasses against fogging. 5.Reusable & Washable: Replaceable filter, easy to change activated carbon filter by opening air valves. Meanwhile The dust mask can be washed when getting dirty. 6. Best gift for those who involve in outdoor activities. 7. Suggestion: Change the dust mask per year, the activated carbon filter per 30 days (It depends on the environment). Package includes: 1 * Dust Mask ( comes with a pair of valves and a filter) 3 * Extra Activated Carbon Filters Replacing time of Filters and valves: +The effective working life of the mask filters depends on a number of factors, such as your breathing rate, level of pollution and length of time the filter is actively working. We recommend filters are changed every month. +The valves shouldn't need replacing on a regular basis assuming that they are maintained properly. +On the valve, it is essential that you locate the two pins, nearest the hinge, inserted properly into the body of the valve, and check that they are seated properly.
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