This product is indoor pool filter sponge, made of materials, with simple design and practical function. It has a simple installation method and is easy to clean, which can bring convenience to your replacement work. This is very good filter accessory that will bring you good experience. Features - Material: Sponge. - Size: 10.20X9.00X9.00cm/4.01X3.54X3.54inch. - Our swimming pool filter sponge features with good flexibility and adaptability, simple and practical. - Can be applied normally even after being washed many times, reusable for your long-term demands. - This indoor pool filtering sponge with high-density effectively cleans much rubbish in swimming pool. - Our pool filter sponge replacements tool can be compatible with indoor swimming pool, outdoor swimming pools. - This reusable cleaner filter sponge tool is easy to clean, reliable and useful, save you . Package list: 2 x filter sponges