Robelle 3811 Deluxe 16g. Double-Chamber 10-Foot Blue Winter Water Tube For Swimming Pool Covers

• Heavy-duty 16 gauge vinyl
• Double chamber design prevents the tube from rolling
• Leak-proof easy to fill valves

Product Description 10' Double Chamber 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. Safety Warning Fill water tubes only halfway to prevent expansion damage if water freezes. Use a hair dryer to soften red tabs for easier closing to avoid injury.