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.

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