KN95 Protective Mask * Breathable And Comfortable - Disposable Dust Mask with Large caliber filter can dehumidify and ventilate. * Level 4 Layer Protection - The inside layer are PP non-woven protective layer, which can contact the skin zero irritation to the skin and block harmful gases. The Thickened activated carbon filter can effectively filter PM2.5, second hand smoke. etc. * Widely Used - Used for outdoor cycling enthusiasts, home decoration, DIY projects, buildings, drywall sanding, grinding, sawing, lawn mowing, cleaning, gardening, after testing, all the filter efficiency indicators are above 99%, effective dust prevention. Product Name: KN95 Protective MaskMaterial 1st layer: PP nonwoven outside 2nd layer: KN95 Melt blown filter 3th layer: High efficiency filter cotton or Active carbon fabric 4th layer: High quanlity PP nonwoven inside Color: White/Blue/Black/Grey or as customized Feature High filtration Capacity No Stimulus to human skin Soft, Comfortable, Odorless, Breathable Filter pollen, Dust , Virus and Bacteria