WLLEYAY 3.1 lbs Pool Filter Balls, New Upgrade Efficient Swimming Pool Filter Sand Alternative, Reusable Eco-Friendly Blue Filter Media Balls, Replace 110 lbs Filter Sand, Lasts for Several SeasonsBrand: WLLEYAY Color: Blue Features: 2026 New Upgraded Cost Effective: These pool filter media balls can efficiently replace traditional swimming pool filter sand. It is lighter, more eco friendly, and more effective. What's more, filter balls won't clog your filter, high quality fiber filter balls can extend the life of your sand filter pump for above ground pool. 3. 1 pounds of filter balls are equivalent to 110 pounds of filter sand, which can meet