Polypropylene Filter Bag Additional Details ------------------------------ Bullet point: HIGH-QUALITY POLYPROPYLENE MATERIAL: Crafted from durable polypropylene, this 20-inch water filter bag is designed for superior water filtration. The material of this water filter media is resistant to a wide range of chemicals, ensuring long-lasting performance in demanding environments. Whether you're using it in a whole house water filter or an aquarium filtration systems, this water bag delivers reliable performance for all water applications, filtering out sediment effectively.