1. new, high-quality materials, well-made, , and highly matched to the equipment. 2. Clean accessories enable your home robot to maintain optimal performance. Accessory contents are easy to remove and replace as part of routine maintenance. All while reducing dust, pollen and other allergens from seeping into the air you breathe. 3. In order to achieve the best cleaning and filtration effect, cleaning accessories should be replaced every 2-3 months according to the frequency of use. 4. The dust bag of the sweeping robot is used to collect dust and debris inhaled by the robot when cleaning the floor. Fibrous materials filter tiny particles from the air, reducing dust and pollutants in indoor air. 5. The dust bag can also prevent dust and debris from escaping from the robot, keeping the indoor environment clean, and can filter out smaller particles such as pollen, thereby providing users with a healthier indoor environment. Material: non-woven fabric colour: As shown Package Contents: