50x disposable anti-haze mouth mask dustproof face protector respirator mask

formed with three layers of non-woven, activated carbon fiber 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, hospital, public places and school, office, outdoor sports, construction site, carving grinding work, etc. lightweight and with super stretchy strap, one size fits for most adult.