To bring surgical and cloth masks up to par with N95s and KN95s, you can opt for a mask brace, which is an even better solution than double masking, says David Rothamer, a professor of mechanical engineering at the University of Wisconsin-Madison who has conducted work evaluating mask braces.”It’s kind of interesting that it’s taken awhile for mask fitters or braces to have more visibility,” Rothamer tells Popular Mechanics. “The whole double masking thing is really trying to do the same thing as a mask fitter or a brace, but in a more indirect way. My main concern with double masking is that it’s going to depend on the combination of the two masks.”
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