General description The 6Pcs Swimming Pool Filter Cotton Foam Filter is designed to enhance your pool cleaning experience. This set includes six blue pool filter sponge cartridges that are washable and reusable, providing an effective solution for maintaining your pool's cleanliness while reducing maintenance costs. Technical specifications Quantity: 6 pieces Material: Foam sponge Color: Blue Usage These filter sponges are designed to effectively block impurities, ensuring optimal filtration. Replacement frequency depends on usage; typically, they last less than 1 month.