Robelle 3809-BLK Deluxe 16g. Double-Chamber 8-Foot Black Winter Water Tube For Swimming Pool Covers

• The red tabs can be made easier to close by warming them up with a hair dryer.
• Heavy-duty 16 gauge vinyl
• Double chamber design prevents the tube from rolling
• Leak-proof easy to fill valves

Product Description 8' Double Chamber Black Water Tubes are constructed of heavy-duty, 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 Ensure water tubes are filled halfway to prevent popping caused by freezing water; additional implicit safety warnings related to proper installation and use of the product for securing a pool cover.