Material: High Quality Polyester Fiber Activate Carbon Applicable Gender: Neutral (male female) Features: 1. The adjustable elastic buckle makes comfortable wear. 2. Nose part design gives large space for free breathing. 3. Adjustable metal nose piece can get fit with different face shape and seal better. 4. A 5 layer PM2.5 filter helps to prevent dusts and other small particles. 5. Fine Polyester fiber provide soft, comfort and good moisture permeability. This cover Use For: Particles such as those from grinding, sanding, sweeping, sawing, bagging, or processing minerals, coal, iron ore, flour, metal, wood, pollen, and certain other substances. Liquid or non-oil based particles from sprays that do not also emit oil aerosols or vapors. Do Not Use For: Gases and vapors, oil aerosols, asbestos, arsenic, cadmium, lead, 4,4'-methylene dianiline (MDA) or sandblasting concentrations that exceed 10 times the PEL OEL and other applicable government regulations. Cleaning Method: 1. Plug-in PM2.5 filter can not be cleaned, suggest to replace once a week. 2. Clean with neutral detergent. Use Limitations: 1.This cover does not supply oxygen. 2.Do not use when concentrations of contaminants are immediately dangerous to life and health, are unknown or applicable government regulations. 3.Do not alter, abuse or misuse this cover. Safety Warning: 1. If cover becomes damaged, soiled, or breathing becomes difficult, leave the contaminated area and replace the cover.A Great Gift To Your Kids, Families, Friends, Suitable For Spring, Summer, Autum, And Winter. The face mask set is made of ribbed cotton binding across the top, bottom and ear holes ensure comfortable all day wear. This Anti-Dust cover Is Ideal For Both Women And Men, Boys And Girls, Suitable For Cycling, Camping, Running,Travel,Climbing And Daily Use.Protect You From Fog,Haze,Vehicle Exhaust,Passive Smoking,Etc. 3d Printed Design, Washable And Reusable, Long-Term Washing Does Not Deform. Material Description 100 Polyester (Polyester) Size:16x13cm 6.3x5.1.