High-Quality: It is made of high-quality material, with good durability and stability. Good elasticity, uniform thickness, and compliance with production standards.Recommend to replace the A10 or A11 filter 2-4 months depending on usage.Compatibility: Compatible with for A10 Hero or Master and A11 Hero or Master Cordless Vacuum Cleaner,for S11 or 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.Free your hands from the complicated replacement steps. No extra tools needed.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: as shownMaterial: plasticPackage Contents:4 x Front filter3 x Rear filterOnly 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.