disposable non woven anti-haze protective mouth mask dustproof mask 50pcs

formed with four layers of non-woven, melt blown fabric and filter cloth layer to prevent 95% of dust, haze, germs, allergies, smoke, pollution, pollen, particulates, etc. with a built-in hidden bridge, can be adjusted to avoid fog and reduce the inhalation of harmful substances. suitable for household, public places and school, office, outdoor sports, construction site, carving grinding work, etc. lightweight and with super stretchy strap, one size fits for most men or women.