Powerful detergent - the filter ball is made of 100% PE fiber, light material, high permeability, long service life, high filtration strength, fast filtration speed, long service life, reusable, good elasticity, and low loss etc.Environmentally friendly and durable - Filter ball can replace filter sand and glass filter. They are lighter and more effective than traditional filter media. They are easy to use, non-toxic and easy to dispose. The filter ball can ensure that the water in the swimming pool is cleaned in a short time, achieving rapid water cleaning and improving water quality!Recyclable - The filter ball has a high dust absorption capacity, so it is very durable, has less backwashing process, is chemically resistant, can be cleaned without agglomera.