WHO recommends a 3 layer mask
Our Business Set has got you “covered”! Our 4 Layer offering with replaceable filter offers an outstanding 99% FPE rating at .1...
“Face masks are emerging as one of the most powerful weapons to fight the new
coronavirus, with growing evidence that facial coverings help prevent
transmission—even if an infected wearer is in close contact with others.”
Caitlin McCabe, Wall Street Journal, August 13, 2020
WHO shows how to properly care for a mask in the attached video. Ours can be washed up to 100X saving lots of money and landfill space.