Pool Mate 1-3811-20-BLK-10 Pool Cover Water Bags, 10-Pack, 10 ft. Black Double Chamber, 20 Gauge

• 10-Pack Black Deluxe 10 ft. Double Chamber Pool Cover Water Bags for Winter Pool Closing
• Deluxe .42 MM Thick Vinyl constructed 163% heavier than industry standard.
• Since 1999 Pool Mate has been making the best products to close your pool. Use the best pool closing products designed with over 25 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.

Product Description Pool Mate 10-Foot Winter Water Bags should be placed around the perimeter of your in-ground winter swimming pool cover. Simply slide these winter water bags through the water bag loops included on your winter pool cover. These water bags include leak-proof valves that are easy to fill with a garden hose. Only fill the water bag half-way, this prevents ice from expanding and splitting your water bag. Pool Mate water bags feature a dual-chamber design, preventing the tube from rolling into your pool during the winter. Made with Extra Heavy-Duty 20 gauge black vinyl. Safety Warning Implied safety warnings include proper installation to prevent the cover from falling into the pool and filling water bags halfway for ice expansion to avoid damage.