COMPATIBILITY: This cleaning pad is only suitable for Ecovacs Winbot W1 Pro/ W1/ W2 Omni / W2 window cleaner. NOTE: Please check your model number before purchasing. ADAPTABILITY: Perfectly fits Winbot window cleaners, and thanks to the window cleaner's 2800Pa suction power, the cleaning pads stay firmly on the glass. Whether your windows are frameless or sloped, the cleaning pad fits all window types and scenarios. PREMIUM MATERIALS AND ABSORBENCY: Our cleaning pads are made of high-density cotton fibers and a towel for greater absorbency. Combined with the window cleaner's spot cleaning technology, they provide fast cleaning and drying. The cleaning pads are made of lint-free cotton and will not make the windows hazy. HIGH UTILITY】You will receive 4 Winbot window cleaning pads, depending on the cleaning environment and frequency of use, these pads can be washed and dried and reused for up to 2-3 months. 4 pieces are enough for your daily window cleaning needs.