H2O TUBE 1x10 DOUBLE 20

1'x10' Double Chamber Water Tube used to hold down inground inground pool covers, all winter long. The advantage to double tubes is that if one side should pop then the other side will still hold the cover down. And, the water inside the the tube is more balanced, so less likely to roll away. Leak proof valve is easy to fill with a garden hose. Water tubes should be filled half-way to prevent popping caused by expansion if the water freezes. 20 gauge vinyl