Features: Durability PVC Pool covers Weights (12 Pack) – Heavy duty, tear resistant water bags designed to securely anchors pool covers in extreme weather, featuring leak proof seals and reinforced hooks for long lasting performances. Wide mouthes allows quick filling/draining with garden hoses, while sand compatible construction and anti freeze guidance ensures stability in winter; includes 12 pre attached hooks for effortless installation. Ideal for pool owners, maintenance professional, or anyone seeking reliability protecting for aboves ground, in ground, or customing shape swimming pools against wind displacement. Perfect for safeguarding winterized pool covers during storms, preventing ice expansion damage, or stabilizing light weight covers in winds backyard or commercial pool environments. Engineered with thick wall and universals compatibility, these versatile pool weights adapt to irregular covers shapes, reducing maintenance while providing year round security. Specifications: Color:Two Choices Dimension:34×23cm/13.39×9.06in Component:PVC Package Includes: 12pcs swimming pool water drop wall bag note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.