What are N95 and FFP2 face masks?

As more Covid-19 variants emerge across the globe, attention has once again turned to N95 and FFP2 face masks.

FFP2 respirators with nanofiber

FFP2 (KN95) Face Masks - 4T Medical

KN95 Face Mask - FDA APPENDIX A APPROVED LIST - Protective

Aluminum Flat Wires for N95/FFP2 Mask Production

FFP2 and N95 Masks to Help Protect You From COVID-19

What are N95 and FFP2 face masks?

What Are FFP2 Masks? FFP2 Respirators VS Alternatives

12 Signs You Have a Fake N95, KN95, or KF94 Mask

Black Face Mask Respirator KN95 N95 FFP2 Valved with Active Carbon