This pool filter sponge is designed to keep your pool water crystal clear and provide and enjoyable swimming environment. Made from durable and materials, it is resistant to alkaline substances and will not deform over time. The sponge design enhances filtration efficiency and ensures that your pool water is purified to the highest standards. With its square shape, it is easy to install and replace, making it a convenient and practical choice for both residential and commercial pools. Features -Color:Blue -Material:Sponge -Size:10.50X10.50X8.00cm/4.13X4.13X3.14in -The high efficiency of the filter sponge ensures effective removal of impurities from pool water. -The durable and materials used in the construction of the filter sponge ensure reliable performance over time. -The unique design of the sponge enhances the filtration efficiency, allowing for more effective removal of impurities from the pool water. -The square shape of the filter sponge allows it to fit a variety of filter shapes and sizes, making it versatile and adaptable for different pool systems. -The filter sponge is easy to install, replace, and clean, providing convenience and ease of maintenance for pool owners. Package list: 4 x Pool Filter Sponges