Premium H13 grade true HEPA filter captures 99.97% of airborne particles down to 0.3 Micrometres in size High-efficiency activated carbon filter absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOC's [HEPA Filter]Made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust, and others into the air you breathe. Washable & Reusable. Rinse with clean water and let it completelyair dry before reusing filter. For optimal performance, it is recommended to change this filter set once every 1-3 months. Easy to Replace and Install, When it needs to be replaced, just remove and replace from your machine equipment, no tools required. Colour:black+white Material:Plastic + cotton Package Contents: 2 x Black Filter 2 x Black Filter Cotton 2 x Semi-Circular Haipa Filter 2 x Round Hypa Filter 4 x White Sponge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.