These pool skimmer socks is specially designed for Baskets, Filters and Skimmers The skimmer socks just like bags help trap hair, leaves, scum, grass, hair, oil, pine needles, pollen, bugs, and other debris, prevent them from clogging your swimming pool filter, keep your pool clean Pool skimmer socks protect the pump impeller and shaft seal from damage or clogging, extending the lifespan of your pool filter system Easy to Install in seconds, just slip the sock over the pool skimmer basket and it is ready to collect dirt from the water Package includes 10 pool skimmer socks, it's better to replace the sock every 4-8 weeks