Intercept and deactivate. What is effectively intercepted the nanofiber membrane in both directions, that is effectively deactivated by accelerated copper oxide. Respirators from the VK line have a layer with accelerated copper oxide on the inner and outer side and therefore provide its wearer with excellent protection. The respirators deactivate viruses coming from the user’s surroundings or from the user him/herself, if he or she is infected. You do not put others in danger only if you yourself are safe.