Straps behind your ear help to hold the mask in place. KN95 Masks: Similarities and Differencesīoth N95 masks and KN95 masks are made from multiple layers of synthetic material (typically a polypropylene plastic polymer) and are designed to be worn over the mouth and nose. Buy: N95 Particulate Respirator (50-Pack) at $179.99 N95 Masks vs.
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