PREMIUM MATERIAL - Made of high-strength and environmentally friendly materials to ensure optimal performance and a healthier lifestyle. A good helper to keep your home truly clean and improve your family's air quality. HIGHLY EFFICIENT FILTERING TECHNOLOGY - Two brushes are perfectly matched, one for loosening dirt and the other for sweeping dirt. The side brush reaches deep into corners and edges to remove more dirt and debris. The cleaning filter blocks 99.97% of dirt, pet dander, and other particles as small as 0.3 microns If the side brushes have bent due to shipping, recover them by simply soaking them in warm water for a while. EASY TO CLEAN AND REPLACE - Hand wash in warm water and let air dry completely before reusing. Clean replacement parts regularly to improve suction and performance and extend the life of your robot vacuum. For best results, the edge sweeping brushes and filters should be replaced every 2-3 months. Multi-surface brushes should be replaced every 6 months.