Package Includes: 3 X Replacement Hepa Filters, For D300 Cordless Vacuum Cleaner. | | It'S Easy To Replace. Press The Button To Open The Cover On Top Of The Vacuum Cleaner, Remove The Old Hepa Filter And Re-Install The New One. | | Clean The Filter With A Small Brush (Not Included). The Hepa Filter Can Be Used Immediately. | | The Filters Are Washable And Reusable.( Warning: Always Dry Filter For 24 Hours Before Replacing. Do Not Use Detergent Or Hot Water To Clean Filter.) | |