Pool Mate 1-3809-10 Pool Cover Water Bags - 10-Pack, 8 ft. Blue Double Chamber Heavy Duty 16 Gauge Vinyl - Secure Winter Pool Covers, Prevent Wind Damage, Ideal for Inground & Above Ground Pools

Pool Mate 8-Foot Winter Water Bags should be placed around the perimeter of your in-ground winter swimming pool cover. Simply slide these winter water bags through the water bag loops included on your winter pool cover. These water bags include leak-proof valves that are easy to fill with a garden hose. Only fill the water bag half-way, this prevents ice from expanding and splitting your water bag. Pool Mate water bags feature a dual-chamber design, preventing the tube from rolling into your pool during the winter. Made with Heavy-Duty 16 gauge blue vinyl.