Our Nylon Mesh Filter Sock is the perfect solution for marine aquarium filtration needs. Measuring at 4.13" x 7.87", it is designed to fit most filter holders. The nylon mesh material is durable and long-lasting, making it an ideal choice for capturing debris and detritus. Easy to clean and reuse, this filter sock is a cost-effective alternative to traditional filter media. Keep your aquarium clean and healthy with our Nylon Mesh Filter Sock.