The 10pcs swimming pool filter bag is made of ultra-thin and dense nylon. It has good elasticity and can be easily stretched, enough to cover the skimmer basket. The size of the pool filter sock is 13 x 22 cm, suitable for all kinds of filter pool baskets, baskets or skimmers. Our trash bags can help protect the pool filter system from damage and clogging, extend the life of the pool filter system and keep your pool clean. These pool socks work like a net, attracting and catching leaves, grass, hair, moss, oil, pine needles, pollen, insects and other debris. It prevents them from clogging your pool filter system. You should replace or clean the socks every four to 8 weeks when they are too dirty to slow down the water flow; Do not use it if you are dissolving a chlorine tablet in your basket.