COMPATIBLE MODEL: These cordless filter replacements are designed for V8 FOCUS Mattress Vacuum Cleaner. The post filter is only available for V7 and V8 vacuum, not fit for other series vacuum model HIGH QUALITY: These v8 FOCUS Mattress filter for is made of high-strength green materials, which can improve the performance of the vacuum cleaner and create a clean and comfortable living environment . WASHABLE & REUSABLE: These v8 absolute filter replacement for can be washed directly with water, and can be reused after drying. It is recommended to clean once every 2-3 weeks and replace the filter every 2-3 months. This can maintain the good performance of the vacuum cleaner and prolong the life of the vacuum cleaner. High-efficiency activated carbon filter absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOC's Easy to replace and disposable, no tools required. replace filters every 6 months for optimal performance. Quantity:4PCS Colour: Material:Plastic Package