PM2.5 five layer filter made of activated carbon and non-woven melt-blown filter cloth, to block particulate matter measuring 2.5 microns or bigger.
Approximate size 4.72 x 3.15 inches.
Manufacturer requests you dispose of filter after 1 week of use. Does not state how many hours constitute 1 week of use. DO NOT WASH.
Coronavirus itself is smaller than 2.5 microns, however droplets carrying the virus are often as large or larger than 2.5 microns and thus it MAY be possible that a PM2.5 filter could provide a partial barrier. There is no research to back up any claim of PM2.5 filters being effective against C19 as of July 2020.
Big Friendly masks. Big friendly masks provide safe support and comfort. 4-layer cotton masks with filter pocket and metal nose support for maximum safe comfort. Made by hand by Julie. Read research about Covid-19 here.