Replace your and post regularly, it can reduce infiltration of dust, pollen and other allergens into the air you , replace six months for optimal use. You just need rinse with clean water and let it completely air dry reusing . very simple,effective,easy to use and clean, you'll for Post HEPA Filter& compatible with for V7 and V8 Cordless Stick Vacuum Cleaner, this filter set will be the instant favorite for vacuum cleaner . Package include 2pack , 2pack V7 V8 HEPA Post , 1 pack yellow cleaning brush.Fits for V7 and V8 Cordless Stick Vacuum Cleaner, replace parts 96566101, 96747801. TIPS:HEPA Postfilter Kit Can Replace For V8 V7 (Not for V6). Colour: purple Material: plastic Package Contents: 2 * 2 * Post 1 * Cleaning brush Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.