Description This item is a fish tank filter sock ,manufactured with premium cotton materials, so that it can serve you for many years.High class materialthat can ensure its durability and practicability.It is great replacement accessory for your the filter system of fish tank. Features -Color: White -Material: Cotton -Size: About37.50X19.00X0.50cm/14.74X7.47X0.20inch -It is very easy for you to install and disassemble, saving the time and effort. - For use in marine saltwater, tropical and freshwater aquariums along with other application which require a liquid filter bag. -They are perfectly designed to fit most filter vessels and filter sock holders. -Light weight and compact size, easy for you to carry and store when not in use. -Great replacement choice for old or broken filter bags, this can really give you a good use experience. Package list: 1 x filter bag