High quality: It is made of high-quality plastic material, with good durability and stability. Good elasticity, uniform thickness, and compliance with production standards.Recommend to replace the A10 filter 2-4 months,According to the frequency of use, it can be replaced by a shorter or time. Compatibility: A10 Compatible with for A10 Hero/Master and A11 Hero/Master Cordless Vacuum Cleaner,for S11/S12 Series Cordless Vacuum Cleaner. HEPA Filter: Filter out most of the dust, pollen, smoke, odor, mold spores and pet dander. The air filter captures particles as small as 0.3 Micrometres and larger, which helps to health. Easy to Install: Remove the dirt cup from the cleaner, remove the old filter. Install the new filter in place.Replace the filter regularly, make your vacuum providing best cleaning performance.Washable and Reusable.In order to the performance of the vacuum cleaner, please clean or replace the filter in time.Rinse and let air dry completely. Keep air: It can filter out harmful odors in the air, which is very suitable for people who to keep the air and control the air quality. It is an Perfect accessory for vacuuming and can the safety of the surrounding environment. Colour: Color Material: Plastic Package Contents: 2 * Front filter 2 * Rear filter 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.