It filters 95% of particulate matter, just like the N95 mask, says Dr. Nina Shapiro, a pediatric ear, nose and throat specialist at Westside Head and Neck in California. KN95 masks are the Chinese ...

$25+ at Amazon These USA-made N95 masks also made the NIOSH-approved list for effective particle filtering and a design that uses multiple layers for at least a 95% filtration rate. The active ...