Secure Installation: Equipped with robust buckles, these pool cover weights your cover remains firmly in place, preventing wind displacement. The design simplifies setup, minimizes loosening risks, and keeps your pool pristine by blocking leaves and debris. Enhanced Durability: Crafted from heavy-duty PVC, our anti-freeze pool water bags resist freezing, tearing, and wear. Their robust construction guarantees a prolonged lifespan, even under severe winter conditions, ensuring no leaks compromise their effectiveness. Leak-Proof Efficiency: Featuring a sealed edge and a leak-proof valve, these pool cover water bags maintain their weight and stability without any leakage. The user-friendly valve design facilitates easy operation, enhancing the overall utility of the bags. Convenient Filling and Draining: Designed with a wide mouth, these pool water bags accommodate most garden hoses for quick filling and draining. To avoid freezing expansion, fill only to 1 or 2 or 3 or 4 capacity. Alternatively, use sand for added weight and stability. Versatile Compatibility: Our pool cover weights are universally compatible with pool cover sizes and shapes, offering flexibility and adaptability for all types of pools. Their versatile design makes them an essential accessory for pool maintenance. Specification:8 Pcs Colour: Blue Material:PVC Package Contents: 8Pcs x Pool Cover Weights Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.