This rugged vinyl air pillow absorbs pressure and helps protect your pool walls. The Air Pillow also reduces excess rain, snow, and leaves on your winter cover, by puddling the excess water into one area, which can then be siphoned off with a cover pump. Even more important, they assist in preventing pool walls from splitting due to water freezing. Just place the air pillow between the pool water and the winter cover. Extremely effective when used on above ground pools.Also known as an ice equalizer or pool cover air bag, these high quality vinyl air pillows will last for years. The 22 gauge is considered thicker than our 18 gauge air pillow. Air pillows are designed to relieve pressure from pool walls due to weight of snow and ice. Also keeps leaves and debris off the cover. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Covers & Reels". The seller is "savemoreonpoolsupplies" and is located in this country: US. This item can be shipped to United States.