This Fish Tank Filter Bag is made of polyester material that is durable and resistant to deformation. It is designed to hold various filter materials, to keep the water clear and clean. The bag features a convenient zipper design that makes it easy to install and clean.This versatile filter bag is not only suitable for fish tanks but also for other filtration needs. Features -Color:White -Material:Polyester -Size:45.00X35.00X0.50cm/17.68X13.76X0.20in - Filter bags are the best form of mechanical filtration for you to make your fish tank clean. - Fine filtered zipper mesh bags can provide a great experience for your aquarium, and it plays an important role in improving water quality. - Sturdy construction and strong stitching make these fine filter media bags sturdy and durable, so they can be cleaned and reused multiple times. - Aquarium filter bags are of moderate size and are suitable for most aquarium fish tanks; You can fill the appropriate amount of filter material according to the actual situation. - The zipper seal not only facilitates the replacement of the filter material, but also ensures that the filter material does not spill. Package list: 10 x Filter Bags