Above Ground Swimming Pool Winterizing Closing Air Pillow - 4x8

Ice and frozen water can cause potential damage to your above-ground pool coverand pool walls due to expansion. This 16-gauge vinyl Air pillow goes under yourpool cover and protects your pool cover and walls by attracting freezing water as itexpands due to water contraction. This multi-purpose pillow also helps reduce thebuild-up of rain, leaves, or snow on your winter cover. The Air Pillow only needs tobe inflated halfway to prevent deflating due to expansion. Measures: 4 x 8 Feet Heavy-duty 16-gauge vinyl construction Air pillow absorbs freezing water as it expands Relieves above ground pool walls from the stress of ice expansion Helps reduce the build-up of rain, leaves, or snow on your winter cover Save your above-ground pool! Prevents structural damage