No additional filter needed. It is 3-layer design. The outer layer: made of nano fabric which is 99.99% antibacterial, stain resistant & liquid repellent; The middle layer: a German brand, French made reusable filter; The inner layer: 100% cotton. The filtration efficiencies is proven by Nelson Lab USA, after 125 washes, BFE 93.48%, PFE 99.04%, 99.99% antibacterial. NanoFit Protect provides enough protection for daily use. It can be hand washed/ machine washed/ washed with high temperature. It c Fabric Mask, Layer Design, Layers Design, High Temperature, Face Masks, Black Friday, Face Mask, Mask, Canning
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Inbuilt filter 3-layer reusable fabric mask can be washed for 125 times

No additional filter needed. It is 3-layer design. The outer layer: made of nano fabric which is 99.99% antibacterial, stain resistant & liquid repellent; The middle layer: a German brand, French made reusable filter; The inner layer: 100% cotton. The filtration efficiencies is proven by Nelson Lab USA, after 125 washes, BFE 93.48%, PFE 99.04%, 99.99% antibacterial. NanoFit Protect provides enough protection for daily use. It can be hand washed/ machine washed/ washed with high temperature…

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