With the ECOVACS WINBOT mini 2 Family microfiber cloth, you can replace the mopping pad of your window cleaner. You can easily replace your old, worn-out, or dirty chamois with the new microfiber cloth. This way, your robot can clean your windows thoroughly again. You'll always have a clean cloth on hand when the dirty one is in the wash. You replace the microfiber cloth after 90 days. With this pack, you get enough cloths for 180 days. You only use the mopping pad with holder with the ECOVACS Mini Series 2.