Applicable Model - Suitable For Ilife A6 A4 A4S Robotic Vacuum Cleaner. | | Easy To Install - Quick And Easy To Install, No Tools Required. | | Premium Sponge Material - Made Of High Quality Sponge Material, Safe And Healthy To Use. | | Efficient Filtration - Effectively Remove Dust, Particle And Other Tiny Particle. | | Practical Replacement - Please Replace The Filter Once Or Twice Every Month For High Efficient Performance. | |