Product size about :10.8x4x7.3cm or 4.2x1.5x2.8'' Product color: As shown in the figure Product material:foam product features: Clean foam material: This foam filter is made of high-quality sponge, which is flexible, elastic and not easy to deform. It can be reused after washing, which is very environmentally friendly, easy to clean and prolongs its service life. Good filtration effect: Our sponge filter adopts a high-density mesh structure, which can effectively capture various impurities in the swimming pool, such as leaves, grass, hair, mineral deposits, pine needles, insects and other floating objects. Use our sponge filter to keep the pool water clear and transparent. Cost saving: Replacing the filter composition is part of the daily maintenance of the swimming pool. The cost of regular replacement of the filter composition will become quite expensive over time. Our sponge filters are washable. They make cleaning and maintenance of the swimming pool a breeze. Reusable: The foam filter composition is reusable and washable, and its service life is about 2 months. Clean the filter sponge weekly to ensure clean water and reduce in the swimming pool. Our filter compositionis designed to be easy to clean and install, making pool maintenance a breeze. Suitable for S1: Our washable foam filter size is 10.8x4x7.3cm or 4.2x1.5x2.8'', suitable for S1 models and most pool filters on the market. To keep your pool, aquarium, bathtub and spa clean, we recommend replacing the washable foam filter every two weeks to ensure optimal filtration and keep your pool clean. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 or 4 or 8 pc Swimming pool filter sponge Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store