suitable for Replacement Pre Filters& Post Filters for Tineco A10/A11 Hero A10/A11 Master and Tineco PURE ONE S11-CHENG DU SI XI High quality: It is made of high-quality plastic material, with good durability and stability. Good elasticity, uniform thickness, and strict compliance with production standards.Recommend to replace the A10 filter every 2-4 months,According to the frequency of use, it can be replaced by a shorter or longer time. Compatibility: A10 filters Compatible with for Tineco A10 Hero/Master and A11 Hero/Master Cordless Vacuum Cleaner,for PURE ONE S11/S12 Series Cordless Vacuum Cleaner. HEPA Technology: 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 improve 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 ensure the performance of the vacuum cleaner, please clean or replace the filter in time.Rinse and let air dry completely. Keep fresh air: It can filter out harmful odors in the air, which is very suitable for people who want to keep the air fresh and control the air quality. It is an Perfect accessory for vacuuming and can ensure the safety of the surrounding environment. Colour: Picture Color Material: Plastic Package Contents: 2 * Front filter 2 * Rear filter 1 * Cleaning brush Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.