Polysphere Filtration Balls are a great alternative to sand when using a Bestway filter product. Suitable for all existing sand filters in the Bestway range, these 100% PET balls are a lightweight, long-life alternative to sand. Key Features: • Provide an eco-conscious alternative to traditional sand filters, reducing waste and environmental impact. • These filtration balls are highly effective; a small amount of them can match the filtering power of a large quantity of sand. They help maintain clean water quality in your above ground pool effectively. • Made from recyclable and non-toxic material, these cotton-like filtration balls can last for 4-6 months with proper maintenance. This longevity reduces the need for frequent replacements, saving you money and reducing waste. • Cleaning and maintaining the Polysphere filtration balls is a quick and easy. Hand-wash only; mesh bag included for convenient cleaning. • Contents: 500 g (1.10 lbs) Polysphere filtration balls, 1 mesh bag