Our aquarium filter pad is made of durable polyester fiber, featured with strong filtration, high water permeability, easy-to-clean and good durability. Our pads’ consistent, reliable design gives superior filtration for your fish tank. Let your lovely fishes and tortoises enjoy the clean water. Features: Made of polyester fiber, durable, non-toxic and safe for aquarium use. High water permeability and strong filtration. Adopt wetland aquatic plant purification theory to decompose the dirt. Fine fiber can effectively filter impurities in the water. Easy to clean, machine washable and would not be deformed. Any problem, please contact our store without hesitation. Honor to serve you! How to use: Put the wool side upwards, and then lay it on the dry-wet separator. Specifications: Size: 30*40cm Color: White Material: Polyester fiber Package Information: Package Size: 29 * 17 * 3cm/ 11.42 * 6.69 * 1.18in Package Weight: 40g Plastic Packaging Package List: 1 * Aquarium Filter