The filter is made of high-efficiency filter material, which can effectively filter dust etc. to prevent large dust particles from entering the motor, ensuring a long service life of the motor vacuum cleaner.< /li> In Wash in hot water and air dry completely before reuse. If necessary, a mild detergent can be used. To ensure that your vacuum cleaner works properly and optimally, it is recommended to replace the filter every 4-6 months. High-end vacuum cleaner filters have a two-in-one design with high efficiency for blocking fine particles, suspended dust, etc. Filters should be replaced every 4-6 months. If you have pets, please shorten the changing time to improve dust collection efficiency. Replacement number: 971517-01. Suitable for Dyson V12 Detect Slim. Package contents: 3 filters, 1 cleaning brush