1. Made of materials, it is durable and highly compatible with the original equipment. 2. The cleaning accessories can keep the household robot in certain condition. As part of daily maintenance, the accessories will be removed and replaced. At the same time, they can also reduce the infiltration of dust, pollen, and other allergens into the air you breathe. 3. To achieve relatively good cleaning and filtering effects, the cleaning accessories should be replaced every 2 - 3 months depending on the frequency of use. 4. The HEPA filter can improve the air quality to a certain extent, with a filtration efficiency of up to 99.97%. It helps to remove household dust, pet dander, etc. 5. It can help reduce unpleasant odors. This filter can help reduce the odors produced by pets, smoke, cooking fumes, and various household products and chemicals. Materials: Composite materials Color: Green Package contents: One purifier filter Only the above package contents are included, and other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the actual one. The allowable measurement error is +/- 1 - 3 cm.