Winter protection These inflatable pillows float on the water surface and are filled to 6070% capacity to absorb freezing expansion pressure, effectively safeguarding your pool from ice damage. Cost effective maintenance By preventing winter related damage, these pillows help prolong the life of your swimming pool while minimizing maintenance expenses, offering peace of mind throughout the colder months. pressure distribution Designed to evenly distribute pressure across ice blocks, these pillows significantly reduce the risk of structural damage during severe winter weather conditions. Easy installation Available in sizes 4x4 ft and 5x5 ft, these pillows feature reinforced hole rings and long ropes for secure attachment, simplifying the installation process. Specifications and features Sizes: 4x4 ft and 5x5 ft Function: float on water surface, absorb freezing expansion pressure to protect pool Performance: distributes pressure across ice to reduce risk of structural damage Installation: reinforced hole rings, long attachment ropes for secure setup Use scenarios Winter protection for standard residential pools in freezing climates: deploy to absorb ice expansion and shield pool walls from damage. Severe winter weather scenarios: use to minimize risk of structural damage when ice buildup is substantial. Prewinter maintenance planning: install ahead of freezing conditions to extend pool life and lower upkeep costs during winter.