1. Compatibility This cleaning pad is specially designed for the window cleaning robots for Ecovacs Winbot W1 Pro, W1, W2 Omni and W2 to ensure a perfect fit. Please confirm your device model before purchase. 2. Materials The cleaning pad is made of high density fiber cotton and super soft fiber material, and has excellent water absorption performance. In combination with the strong adsorption of the cleaning robot, it can quickly remove dirt and prevent glass scratches. 3. Powerful Decontamination It has strong and durable cleaning power and can easily deal with various stains such as traces, tree resin residue, oil stains on the floor, etc. Cleaning pads are machine washable and reusable. 4. EASY INSTALLATION AND MAINTENANCE These cleaning pads can be easily removed, replaced and machine washed to maintain efficient cleaning performance over a long period of time. They are suitable for different window scenes and types.