Robelle 8 ft. 12pk Double Chamber Pool Cover Weights

8' 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. 12 Pack.12-Pack Blue Heavy Duty 8 ft. Double Chamber Pool Cover Weights for Winter Pool ClosingHeavy Duty .33 MM Thick Vinyl constructed 107% heavier than industry standard.Since 1973 Robelle has been making the best products to close your pool. Use the best pool closing products designed with over 50 years of experience.Prevents Winter Pool Cover From Falling Into Pool.Double Chamber Design Prevents Rolling.Fill Halfway With Water to Allow For Ice Expansion.If you have trouble closing the valve please use a hair dryer to loosen before closing.Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item Warranty: 90 Day Woot Limited Warranty