[Package includes]: 3 x filter sponge, size 8 x 15cm (length x width), suitable for water filter cartridges, swimming pools, aquariums and other occasions. [High quality material]: the filter sponge is made of high quality PU sponge, which has high pressure strength and elasticity, corrosion resistance, environmental protection, no peculiar smell and good air permeability . Easy to disassemble for cleaning. [Wide Application]: It can clean up pool trash, such as leaves, hair, plastic bags and other small trash that is not easy to clean. to clean. You will get a clean swimming pool. [Unique Design]: High density design, will not block the water flowing through the filter. The filter is easy to connect, which prevents dust and debris from entering the filter tank, thus extending the life of the filter media. Quantity delivered: 3 pieces