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 99%dust ,dirt, pollen, allergens, fumes or particulates that effect you breath inthe air. That's a good reason to buy this Ydmpro 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 on your 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 Extra Filter Cotton Sheet and Valves： 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. Packing Contents: ● 1 × Ydmpro Mesh Mask （come with one pair of valves and filter） ● 6 × Extra Activated Carbon Filters
