10 Pack HEPA Filter for Xiaomi Roborock S6 S5 MAX S60 S65 S5 S50 S55 E25 E35 Vacuum Cleaner The filters can maintain the mop's cleaning performance and reduce dust ingress. > It is recommended to replace the spare parts every 2-3 months depending on the frequency of use to keep the machine in good condition Compatibility: for Xiaomi Roborock S6 S5 MAX S60 S65 S5 S50 S55 E25 E35 Contents: 10 filters. The HEPA filter is washable