PoolStyle WTB-1018 4' x 4' 16 Gauge Equalizer Pillow

The PoolStyle 4' x 4' equalizer pillow helps prevent water and debris from collecting in the center of your pool cover during winter. Made from 16-gauge durable vinyl, this heavy-duty air pillow provides pressure relief when pool water freezes. By compressing as ice expands, it helps protect your pool walls and liner from potential damage. The pillow also makes it easier to drain off excess water, keeping your cover more manageable during the off-season. It’s ideal for residential pool owners seeking a simple and effective winterizing solution. This pillow is reusable, lightweight, and compatible with both above-ground and in-ground pools.