1. -, high-quality materials, well-made, and highly matched with the equipment. 2. Clean accessories keep your home robot at its best performance. As part of routine maintenance, the accessories are easy to disassemble and replace. At the same time, reduce the infiltration of dust, pollen and other into the air you breathe. 3. In order to achieve the best cleaning and filtering effect, cleaning accessories should be replaced every 2-3 months according to the frequency of use. 4.can greatly improve the air quality and reduce the particle size by up to 99.97%. Helps to remove household dust, pet dander, etc. 5. Say goodbye to odors. Pre-filters can help reduce the unpleasant odors of pets, smoke, cooking smoke and household products and chemicals. for M6 Series Ultimate Robot Colour:As Shown Material:fiber Package Contents: 6 x mop cloth 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.