A protective mask (respirator) with this protective filter generally traps aerosols, dust and smog particles, pollen, etc. Suitable for people with glasses, thanks to the practical cut it covers a large part of the face and the glasses do not usually fog up.
Protect yourself, protect others too!
Do not wash, do not iron, do not steam. 95% filtration rate.
KN95 is recommended as the minimum standard of protection.