Function

Helps to absorb the pressure of freezing water in an above ground swimming pool during winter. When tied securely in the middle of the pool surface, it also allows excess water on top of the cover to be diverted around the perimeter for easy removal. Simply inflate the pillow, tie rope to each eyelit, secure to the middle of the pool and put on the winter cover. Adding 1-2" of water to the top of the cover will help to hold the pillow in place and hold down the cover.

Features

   * Great for Oval Pools
   * Absorbs Pressure of Freezing Water
   * Heavy Duty Industrial Strength Vinyl
   * Rugged eyelits