Novemkada Dustproof Mask - N99 Activated Carbon Dust Masks Extra Filter Cotton Sheet Valves Exhaust Gas, Pollen Allergy, PM2.5, Cycling, Running,Outdoor Activities (2 Set Black and Blue)

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About Novemkada Dustproof Mask - N99 Activated Carbon

WHY SHOULD WE NEED THE DUSTPROOF MASK?Are you now troubled by dust chemicals, smoke andparticles?Do you want to enjoy a free outdoor life?Are you live in haze days, dust, vehicle exhaust, airpollution?Our environment are full of dust, haze,vehicle exhaust, air pollution,and  the dust mask can keep you from 98%dust ,dirt, pollen, allergens, fumes or particulates that effect you breath inthe air.That's a good reason to buy thisNovemkada Activated Carbon Dustproof Mask.Refused to be a human vacuum cleaner,wear a dust proof ,anti-haze mask.Healthy breathing and safe to go out.Installation instructions:1.With nosepiece facing away from you.Holdthe earloop in each hand with the nosepiece up.2.Position the respirator under the chin.3. Pull each strap over the ear. Adjustthestraps as comfortable as possible.4.Place the fingertips of both hands atthetops of the nosepiece. Mold the nosepiece to the shape of the nose bridgebypushing inwards while moving your finger tips down both sides of thenosepiece.Pinching the respirator using only one hand may result in lesseffectiverespirator fit.✔If it very important to press the nosepiece firmly to the nose bridge to from a good seal.Replacement ：1.Open the mask,revealing the internalvalve filter.2.Follow the open instructions on thevalve , counter clockwise rotationof the valve, separation the air valve.3.Take down two valves,remove the filter.4.Change a new filter,fllow the closeinstructions on the valve,clockwise rotating the valve and replacement iscompleted.✔On the valve, it is essential thatyoulocate the two pins, nearest the hinge, properly into the body of thevalve,and check that they are seated properly.PACKAGE INCLUDING:1 Pack:1xNovemkada Dustproof Mask2x Extra two valves1x Filter cotton Other please check the picture.