1. Brand new, high-quality materials, well-made, durable, and highly matched with the equipment. 2. Clean accessories keep your home robot at . Accessory contents are removed and replaced as part of routine maintenance. Also reduces the infiltration of dust, pollen and other allergens into the air you . 3. In order to achieve the best cleaning and filtering effect, cleaning accessories should be replaced 2-3 months according to the frequency of use. 4. can greatly the air quality and reduce particle size up to 99.97%. Helps remove household dust, pet dander, and more. 5. Say goodbye to odors, the pre-filter can help reduce unpleasant odors from pets, smoke, cooking fumes, and a of household products and chemicals. Material: fibre colour: blue Package Contents: 4 x mop 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.