3 Ply Disposable Face Masks, provides protection from dust, germs and infection. Sold conveniently packaged in a pack of 50. Anti-Spray, Anti-Odour Anti-dust Anti-pollen Anti-smog Sun protection and Anti-PM2.5 ( Fine particulate matter) Recommended Use Disposable face mask should be used once and then thrown in the bin. You should also dispose of and replace when they become moist.