Filters maintain the robot's cleaning efficiency, reducing the ingress of dust, pollen and other allergens into the air. Accessories should be replaced every 2 to 3 months. All parts are made of high-strength and environmentally friendly materials. It is easy to remove dirt, dust and debris from corners and edges of the accessories, especially human hair and pet hair. The accessories are durable and easy to install Alternative for 970422-01 Compatible with: for Outsize,V11 Outsize,V11 Outsize ,Outsize Absolute+ Color:As shown Material:Plastic Package Contents: 2 x Vacuum Filter 1 x Clean 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 +/- 1-3 cm.