Feature: 1. Effectively filter impurity, can make the water become clean and clear easily. 2. Easily cut to fit your desired size, dimension and thickness, meet your different needs. 3. Including five colors, representing different functions, suitable for different situations, provide various choices. 4. Powerful functions, can absorb ammonia, prevent growth of algae, deodorization, softening water and filter the nitrite. 5. Adopt the environmental protection and high quality material, not easy to break, firm and durable. Specification: Item Type: Aquarium Filter Floss.Material: FiberPurpose: FilterSize: 30x 14x 6.5cm/ 11.8x 5.5x 2.6inWeight: Approx. 231g/ 8.1oz Package List: 1 Bag x Filter Floss