Bullet points:
1. The product has good water permeability and air permeability. Suitable for fish tanks, aquariums and swimming pools, etc.
2. Safe to use: it does not contain toxic or harmful substances and has no effect on water quality.
3. Made of sponge material, light weight, filled with filter balls, durable and resistant to cleaning.
4. It can be used to filter sand and pollutants from entering the swimming pool. The use of filter balls can significantly improve the quality and sanitation of the swimming pool.
5. Sponge filter balls is a perfect substitute for traditional sand filter. Unlike sand, it does not harden or agglomerate during use. Lightweight and easy to handle.

Package included:
4*Filter balls