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| Health Keeping your body well enough to support your head |
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07-27-2020, 06:45 AM
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#11 |
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Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
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The fit and breathability of the mask are just as important as the filtration. Possibly more important.
If the fabric weave of the mask is too tight, with a really high thread count, or too many layers, it just acts as a diverter to funnel your breath out the sides and around your nose. Nothing gets filtered. |
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