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 daily maintenance, the accessories are easy to remove 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, the cleaning accessories should be replaced every 2-3 months depending on the frequency of use. 4. The dust bag of the sweeping robot is used to collect dust and debris inhaled by the robot when sweeping the floor. The fiber material can filter tiny particles in the air, thereby reducing dust and pollutants in the indoor air. The dust bag can also prevent dust and debris from escaping from the robot, keep the indoor environment clean, and can filter out smaller particles such as pollen, etc., so as to provide users with a healthier indoor environment. for 2499 Ultra / 7490 / 8290 / Kabum Smart 900 / Atvel R80 Colour:As Shown Material:Non-woven fabrics Package Contents: 24x dust bag 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.