4 Pack 0.7mm Thicker Corner Winter Water Tube for Swimming Pool Covers, 23.6”x11.8” Water Weight Bags for Pool Side, Three-Layer Composite Material

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• 3-Layer Composite Material：Our single-tube pool water bags are made from a three-layer composite material, with E-PVC on the upper and lower layers, and a fiber explosion-proof layer in the middle. The total thickness of the single layer reaches 0.7mm. This advanced structure offers greater durability, edge sealing, and longevity compared to typical 0.4mm single-layer PVC tubes
• 0.7MM Thickness: Compared to thinner, single-layer PVC bags, the 3-layer construction provides better structural integrity. It holds its shape more consistently when filled with water, which ensures better ground coverage, preventing the tube from shifting or collapsing. This results in better performance in holding pool covers down
• Hot Air Welding Process: Can keep the composition of materials consistent, making the welding joint more fused and sturdy, greatly reducing the risk of cracking, and enhance the water bag's load-bearing capacity to ensure superior air-tightness and pressure resistance；and the wide seam design of the pool bags for winter reduces the likelihood of cracking and leaking to around 2%
• Leak-Proof Screw-On Caps: Equipped with screw-on caps instead of tricky snap-on styles, these pool tubes for winterizing are designed for user convenience. the screw cap includes a rubber seal, preventing leaks and making setup easier and more secure compared to other options on the market with snap-on or loose-fitting caps
• Flexible Design: Winterizing your pool is hassle-free with our flexible single-tube water bags. Their adaptable structure easily bends around curves, making them ideal for both rectangular and rounded pools; and please fill water bags 1/2 - 3/4 full to allow extra room for water freezing expansion during the cold seasons