LFUTARI 12 Pack Swimming Pool Cover Hanging Bag – Wall Bags for Above Ground Pool Cover

• Fill the water bags half to three quarters full to prevent popping caused by expansion if the water freezes.
• Winter pool cover tubes are made of heavy-duty cold resistant vinyl with no-leak valves designed to keeps the pool water tubes from leaking and tearing throughout winter.
• The wide leak-proof valve is specially designed for easy filling with a garden hose.There are no problems such as caps being stuck, or difficult to open and close.
• If you are not satisfied for any reason, just return for a refund of your purchase price;we promise 24 hours customer support, please feel free to contact us for any product&order problem.

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.
Note:
Water tubes should be filled half-way to prevent popping caused by expansion if the water freezes.