Replacement filters for our Masks. These PM2.5 particle filters help add an additional barrier. Good for roughly 3-5 days of use then can be replaced. Slide into pocket inside mask. 2 Pack
5 Layer Filtration technology: 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; Dust, Haze, Allergies, Smoke, Pollution, Ash, Pollen, hazardous chemicals, heavy metal particles etc.