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Good News! FLTR Black Masks are available again through your local Costco. Please check your local warehouse for available supply.  FLTR Kid's masks are also on the way!
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Why are there divots in the FLTR95 masks?
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What appears to be “holes” or “perforations” in the surface of the mask are actually indentations in the material and not a hole that material can easily pass through.  These indentations are an integral part of the manufacturing process and are created by the heat-pressing process that joins the five separate layers of the mask together.  This process creates a tight seal between mask layers and aids in the filtration effects of the mask.


Please note that the entire mask must pass filtration testing, including these heat-pressed areas. The filter membrane layer is left intact during this process and they do not reduce the filter efficiency​. The entire mask is tested and must pass ASTM2700 Level 1.



These masks are not approved under the FDA Emergency Use Authorization and, therefore, are not approved for use by medical professionals. 

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