COMPOSITE FILTER: Syvio vacuum filter is composite with the H11 Hepa Filter and the activated carbon mesh, which can filter up to 99.98% small particles. The activated carbon mesh can absorb the weird smell, especially for pets' families..SYVIO'S GUARANTEE: Level H11 HEPA filter can filter and has a small wind resistance, which can reduce the suction loss and provide you with a good vacuuming. Syvio uses the HEPA filter, which is not recommended to wash. Washing will damage the HEPA structure, and the filtration efficiency will be greatly reduced, resulting in incomplete filtration..REPLACE EVERY 2 MONTHS: It was recommended that you clean the filter and the dust bin every week, and replace the filter every 2 months. Regular cleaning will prevent motor blockage and maintains suction. 👔.WHAT'S IN THE BOX? There are 2 pack replacement filters. And every pack is combined with 1 H11 HEPA and 1 black activated carbon mesh..12 MONTHS GUARANTEE: Syvio provides a 12-month Guarantee to Prove the Importance We Set on Quality.