The mask conforms to all norms and standards. It prevents and filters out factors such as bacteria, viruses, particles in the air.
ERA FFP3 professional series provides 98.99% filtering of particles and bacteria in the environment thanks to its high protection level.
Each of them is sold hygienically in its special package.
You can see the standards and markings indicating the level of protection on all masks.
The FFP3 standard has a high level of protection.