Protective filter system: pool skimmer baskets attract and catch insects, leaves, hair, scum, live trash, pine needles and other debris, to prevent them from clogging the system of pool filtration while allowing you to quickly remove debris Durable Material: The socks are made of durable, ultra-thin elastic nylon mesh, reusable and easy to clean. Washed and reused as needed, with good elasticity to stretch easily and enough to cover the skimmer basket Easy to install: Pool filter socks fit ly in all shapes of skimmer baskets. skimmer thanks to the stretch fabric. Installs in seconds. Easy to remove from your skimmer basket. We suggest replacing slick socks every 4 weeks WIDE USE: Skimmer basket socks make cleaning pool baskets easier and less messy. They can extend the life of the pool filter. Can also be used in in-ground and above-ground swimming pools, such as spa, hot tub, black marble bathroom, etc. Package Included: You will receive 40 pieces of pool skimmer socks and enough for your application for a long time to keep dirt away from the pump filter