These reusable filter mesh bags are good for organizing and storing various filtration media, such as activated carbon. The fine mesh design allows efficient water circulation while filtering debris and impurities. Suitable for freshwater and saltwater tanks, they enhance filtration performance and water clarity. Features -Color:White -Material:Polyester -Size:20.00X14.00X0.50cm/7.86X5.50X0.20in -Effortless media replacement: the zipper closure design makes it easy to replace filter media, streamlining the cleaning process and saving you time and effort -Good polyester: constructed from good polyester material, these filter bags are built to last, providing reliable performance and reducing the need for frequent replacements -Effective filtration: the fine mesh design captures even the smallest particles, ensuring effective filtration and maintaining optimal water clarity in your aquarium -Wide compatibility: these filter bags are compatible with a variety of aquarium setups, making them ideal for different types of fish and aquatic environments -Userfriendly design: with simple installation and maintenance, these filter bags are good for both novice and experienced aquarium enthusiasts Package list: 30 x filter mesh bags