MASKiT PM2.5 Fabric Face Mask Disposable Filters Pack 10
PM 2.5 filters are shown to be effective in blocking the vast majority of airborne particulates, even the very smallest nanoparticles. Carbon filter and water resistant layers are the best protection on the market without being medical grade. Each filter lasts up to 60 hours continual wear or a month (whichever comes first).
10x PM2.5 disposable filters