..// 2PCS PM2.5 Black Dust Mask for Adult, with 4 Activated Carbon Filters, Ad

..// 2PCS PM2.5 Black Dust Mask for Adult, with 4 Activated Carbon Filters, Adjustable Reuseable Washable Cotton Unisex Mask

• 8 Layers Filtration Technology: The plaid black mask have 3 layers and the filter have 5 layers. The filters are Made of activated carbon and non-woven melt-blown filter cloth, five-layer filter system effectively keep away from a range of airborne contaminants
• Dual One-way Discharge Valves idea：Make air resistance smaller without sacrificing filtration.
• Meet the Ergonomics : Adjustable nose bridge, elastic earloop and chin cloosy fit design, make the mask more snug to the face for good protection.
• Adjustable Earloops Design: One size fit most people, Ideal for adult, men and women.The mask with stretchy for closely fit, easy to wear and off.
• Parcel include: 2 PCS black mask and 4 PCS Activated Carbon mask filter. The cotton Masks can be washed and reused and the filter can't be reused or washed. Recommend replace the filter once a week for the best effect or 3 day If there is serious contamination.