PPF Shield Washable Face Mask (5 Protective Filter Layer)

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PPF mask features: Efficient protective filter layer Exclusive patent dream fibre long-lasting water-repellent surface layer (Outer layer Waterproof) Nano silver ion layer: Antibac terial and Deodorizing The inner layer is skin-friendly, non-toxic, quick-drying and breathable Can be washed repeatedly 200 times without replacing consumables BFE, PFE, VFE are all> 99% What is BFE? PFE? VFE? BFE is Bacterial Filtration Efficiency, which measures the efficiency of masks to filter bacteria. PFE is Particulate Filtration Efficiency, which measures the efficiency of mask filtering particles. VFE is Viral Filtration Efficiency, which measures the efficiency of mask filtering viruses. Show more