If you are looking for a fish tank filter pad with reliable material and reasonable price, I will tell you that our filter pad will be your . We adopt good material, can keep it for a long time. It is easy and convenient for you to use. Features -Color:Assorted Color -Material:Artificial cotton -Size:32.00X12.00X2.00cm/12.58X4.72X0.79in (blue) -Size:64.00X12.00X2.50cm/25.15X4.72X0.98in (white) -Provide a large amount of surface area for the growth and reproduction of beneficial microscopic organisms. -Increase biological filtration, remove harmful substances from aquarium water and improve water quality, and capture flotsam to help keep your aquarium water clear and not easily clogged. -Durable, reusable, cut to fit, very fluid, easy to clean, rinses in aquarium regularly to protect any small beneficial critters and remove waste, perfect for filtering your aquarium, fish tan, etc. -Our aquarium filtration pads are placed in running water to capture uneaten food, waste, decayed plants, detritus and other coarse to small floating particles in the water. -Great fish tank and aquarium filter pad and give fish a clean environment. You can use this filter pad in the fish tank to get the water clean. Package list: 4 x White Filter Pads 6 x Blue Filter Pads