1. The thick micro-type nylon fabric is , high 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 pool water circulation, and let your pool filter run more efficiently. It is recommended to replace the pool socks every 4 to 8 weeks. 2. The simple make pool maintenance simple and protect the pump impeller and the shaft seal of the pool, so your filter system have a longer life. 3. Easy to install, very flexible, suitable for most types of pool pumps, pool baskets or filter baskets. Simply stretch them over the basket, put them back in the basket, and replace the filter socks regularly. 4. 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. 5. The ideal swimming pool accessory, wear the filter socks and enjoy finer