Wear The Naroo F.U.+ Copper Mask and protect yourself and others!Designed by NAROO MASK, the MICRONET filter offers complete protection against pollen particles even in peak seasons. MICRONET is our exclusive filter that blocks 99% of particles as small as 1.7 to 2.6 μmIt features interwoven copper nano yarn with enhanced biocidal properties. The yarn and copper combination maximizes the copper’s functions; deodorization, preventing static and killing pathogens. This copper fibre is scientifically certified to be 99% effective at killing microbes. This mask not only blocks droplets, but it actively kills microbes as well. Protects not just you but also those around you as works in both directions.