Robelle 10 ft. Water Tubes are constructed of heavy-duty 16-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. Water tubes should be filled half-way to prevent popping caused by expansion if the water freezes.
Heavy-duty vinyl construction
Easy fill valve
Fill half-way
Easy to use
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