Feature: The thick ultra-fine nylon fabric is durable, excellent in quality, and flexible. It can be washed and reused as needed. The ultra-fine mesh can capture all small particles, keep the pool filter clean, promote swimming pool water circulation, and make your pool filter run more efficiently. It is recommended to change the pool socks every 4 to 8 weeks. Simple swimming pool Skimmer socks make swimming pool maintenance easy, and protect the pump impeller and the shaft seal of the swimming pool, so your filter system will have a longer service life. No expensive repairs are required, which helps your pool maintenance. They can catch oil, hair, bugs, grass, pollen, leaves, pine needles and any other small debris. A simple and effective way to protect your pool filter. Specification: Material: Strong Elastic Superfine Nylon Mesh Tile size: 22 X 13cm/8.66 X 5.12" Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-3mm measuring deviation due to manual measurement. Package include 5 X Pool Skimmer Socks