The filter sock is easy to install and fits most sump systems. Simply place it in the designated area, and it will start working immediately. Its reusable design allows for easy cleaning and maintenance, making it a cost-effective solution for maintaining optimal water quality in your aquarium. Features - Color: White -Material:Plastic,cloth - Size: 25.00X10.00X10.00cm/9.82X3.93X3.93in - Water clarity: provides highefficiency filtration to keep your aquarium water clear and pristine, improving the overall viewing experience - and reusable: constructed from durable cloth material, these filter socks are reusable and easy to maintain, ensuring longterm use -Effective particle capture: the bottom filter design captures even the smallest particles, minimizing the need for frequent water changes -Wide application: compatible with a variety of aquarium setups, these filter socks are perfect for different fish tank environments -Effortless setup: quick and easy to install, these filter socks boost your aquarium's filtration system, enhancing the health of your aquatic pets Package list: 4 tank filter bags