Robelle 8 ft. 12-Pack Extra Heavy Duty Blue Single Chamber Pool Cover Weights, .42 MM Thick Vinyl, Pool Water Bags, Water Tubes

8' Single Chamber 20 Gauge Water Tubes are constructed of extra heavy 20 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 Extra Heavy Duty 8 ft. Single Chamber Pool Cover Weights for Winter Pool Closing
• Extra Heavy Duty .42 MM Thick Vinyl constructed 163% 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.
• Single Chamber Design For Easy Filling.
• 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.