The Xiaomi Dust Mite Vacuum Cleaner Filter delivers precise and efficient filtration, capturing fine dust particles as small as 0.3 micrometer with 99 percent efficiency, ensuring a cleaner and healthier environment. Its innovative Mountain-Fold design expands the filter surface for enhanced performance while reducing airflow resistance. The filter is reusable, offering an eco-friendly and cost-effective solution, as it can be easily cleaned and reinstalled after drying. With a recommended weekly cleaning and replacement every 2 to 3 months, it ensures optimal vacuum performance and long-lasting air quality in your home.