Fologtoo 0.7mm Thickened Blue Winter Water Tube for Swimming Pool Covers, 12 Pack 10ft Pool Cover Water Bags for Inground Pool Cover, Three-Layer Composite Material — Open-Box, 16% Off

3-Layer Composite Material: made from 0.7mm thick 3-layer composite material. Crafted with E-PVC on upper/lower layers and a fiber explosion-proof middle layer. They hold seal edges far better than 0.4mm single-layer PVC, ensuring long-lasting performance Single-Chamber Efficiency: Experience superior water capacity and ground pressure with our single-chamber pool water bags. Its nearly seamless design minimizes leakage risks, providing a more dependable solution than joint pipes for better winter coverage High-Frequency Welded: Engineered with high-frequency welding and wide seams, our pool cover bags ensure airtightness and pressure resistance. Withstand freezing temps as low as -10°F for over two years. Fill to 2/3 capacity to prevent freeze expansion Leak-Proof Screw Cap: Easy to use spiral filling caps with built-in rubber seals. A simple twist ensures secure closure, preventing leaks and making pool cover bags maintenance a breeze, far surpassing traditional push-type caps in ease and reliability Easy Installation: Our kit includes 12 pcs 10ft single-chamber blue pool water bags, making winter preparation simple. These pool water tubes flexibly conform to any pool shape, including rounded edges, they offer reliable, seamless coverage often challenging for dual-chamber bags

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