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The face mask having a bodyportion adapted to cover the nose and mouth and having means to secure said bodyportion over the nose and mouth, said body portion comprising a filtrationmedium comprising a nonwoven fabric formed of continuous thermoplasticfilaments having a length of at least 2.5 inches and a diameter of from 14 to20 microns, the filaments lying generally in planes perpendicular to thedirection of the flow of air through the mask, the filtration fabric having aweight of from 47 to 61 gsm and having a thickness of from 0.01 to 0.02 inchesand a void volume of about 85 percent and being substantially free of binder,and a lightweight porous nonwoven facing fabric on each major side of saidfiltration medium.
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