respirators

Left to right: a neck gaiter (aka a buff) that slips over the head; a KN95 respirator, a version of the N95 respirator used in U.S. hospitals; a pleated surgical mask (below the KN95); a cloth mask.

A User's Guide To Masks: What's Best At Protecting Others (And Yourself)

10:52pm July 01, 2020

by Maria Godoy

They're made of cotton. Or polyester. Or paper. Or polypropylene. Here's what researchers say about the effectiveness of the different types of face masks during this pandemic.