PM 2.5 filter for a civilian cotton mask blocks flu viruses, air pollution particles, allergy causing pollen from entering our lungs and pose a risk to our health.

PM2.5 refers to the size of particles the filter can effectively block, this filter is often inserted in some cotton masks with a pouch or pocket, like this his one sold here, is effective in blocking flu viruses.

Delivery time: 5-7 days | MOQ: 5

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This PPE is NOT for health care workers but the public.