A. Made from materials, it is well - crafted, durable, and has good compatibility with the device. B. The cleaning accessories can help keep the household robot in good condition. The contents of the accessories can be easily disassembled and replaced for daily maintenance. They can also reduce the infiltration of dust, pollen, and other allergens into the air you breathe. C. To achieve better cleaning and filtering effects, the cleaning accessories should be replaced every 2 - 3 months according to the frequency of use. D. The High - Efficiency Particulate Air (HEPA) filter can improve the air quality, with a particle filtration efficiency of up to 99.97%. It helps to remove household dust, pet dander, etc. Color: As shown in the picture. Material: Filter cotton. Package contents: 6 mite remover filters. Only the above package contents are included, and no other products are provided. Note: Light reflection and different displays may cause slight differences between the color of the item in the picture and the actual product. The allowable measurement error is plus or minus 1 - 3 centimeters.