DescriptionMade of premium material, these filter bags are specially designed for fish tank, aquarium or others use. They are great for trapping detritus and free floating particles in a fish tank. With the help of them, the water quality in fish tank will greatly be improved.Features-Color: White -Material: Polyester -Size: About40.00X30.00X0.50cm/ 15.72X11.79X0.20inch -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.