Check the listing for details. 100PCS Of PM2.5 Filter Carbon Breathing Insert Protective Pad Gasket. Color: White, Condition: New with tags. Listed at 12.99 USD. 100PCS Of PM2.5 Filter Carbon Breathing Insert Protective Pad Gasket Description Features :Five layers of PM2.5 Replaceable filterMade of c and non-woven melt-blown filter cloth,effectivelyKeep away from PM2.5 and a range of airborne contaminants.Anti airborne particles dust, seasonal alalergies, smoke, pollution, ash, gardening pollen and so on, Suitable for most occasions.Size: about 12*8cm/4.72*3.15 inchMaterials : 5 Layers Non-woven Cloth,Melt-blown Cloth.Non-woven ClothActivated CarbonNon-woven Cloth Note: Plug-in filter can not be cleaned, it is recommended to replace it every 1-2 weeks; Please check the size carefully before placing order Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package include: 100 pcs filters Only Replaceable filter