Naroo Washable Mask F5S Short Lenght Series . MICRONETâ„¢ filter fabric blocks 99% of ultra fine dust particles and pollen starting at 1.7 microns (40 times smaller than a human hair)
Naroo Washable Mask F5 Series . MICRONETâ„¢ filter fabric blocks 99% of ultra fine dust particles and pollen starting at 1.7 microns (40 times smaller than a human hair)