8 ft. Blue Single-Chamber Premium Water Tubes for In-Ground Pool Covers (6-Pack)

This Eight-Foot Single-Chamber 20-Gauge Water Tube is constructed of extra-heavy 20-Gauge . puncture-resistant vinyl. All of our water tubes have a conveniently placed . leak-proof valve that is easy to fill with a garden hose. Water tubes keep your pool cover in place all winter long and should be filled halfway to prevent popping caused by expansion if the water freezes.