Are you troubled by the lack of protection for woodworking, welding, painting and staining decks..? Thenyou need this face cover for work. Our cover is very comfortable to wear while working, the strap creates agreat seal, and all filters are sealed. Comfortable face cover for long periods of use, easy to clean, lightweight tostore in your work bag. Does an awesome job keeping the fumes out..Specification:●Filter type: Organic vapor/gas and dust particles●Facepiece type: half-face (reusable)●Primary material: thermoplastic elastomer (TPE)●Size: one size fits allPackage Included:1 x Half Face CoverWhen to Change the Filter Cotton?When you feel that the breathing resistance is obviously too large, the human body feels uncomfortable,or the filter dust is dirty or damaged, the filter cotton needs to be replaced.The filter cotton is usually replaced in about 5 days (you can extend or shorten the service life accordingto your environment)★ Warm Tips:◆ Used in special cases: the filter box is generally replaced within 200 hours.◆ Used normally: the filter box can be used without changing or extending the time.◆ The filter box and filter cotton can not be washed, other parts of the mask can be cleaned.◆ Do not use in the following cases. Unknown hazardous substances. Concentrations of harmful substancesreach concentrations that immediately endanger your life and health.