For woodworkers, the basic paper dust masks with rubber band straps have an annoying drawback: every time you exhale, hot, moist air is forced out of the gaps around the bridge of your nose, and your safety glasses quickly become fogged. RZ M2 Mesh Masks circumvent that problem with dual exhalation valves that direct air down and outward, away from your safety glasses. This package includes the standard F1 filters with active carbon, as well as a 3-pack of filters, both of which screen out parti
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