Product: Pool Winter Air Pillow Key benefits Protects pool liners from freeze damage: acts as an ice compensator to prevent cracks and tears in pool liners during freezing temperatures, reducing unexpected spring repairs and maintenance. Reliable, seasonlong performance: coldresistant construction and quality PVC resist leaks and do not require repeated reinflation, giving dependable protection through winter. Fast inflation and compact storage: double valve system enables much faster air movement (10x faster during inflation/deflation) and a compact, foldable profile for easy seasonal storage. Easier installation and maintenance: builtin ropecentering method and corner sealing rings simplify placement, keep debris accessible for cleaning, and eliminate the need for extra tools. What it does (function and performance) Acts as an ice compensator: absorbs pressure from expanding ice and shifting water to reduce stress on pool liners. Maintains buoyancy and shape in cold conditions: engineered to stay stable and functional during extended coldseason use. Double valve system: quick inflation/deflation for fast setup or removal and reduced time preparing your pool. Compatibility and material Designed for pool winterizing and protection of pool liners. Constructed from durable, quality PVC with a coldresistant structure to withstand low temperatures and seasonal exposure. Foldable design stores compactly when not in use. Easy installation and care Center and secure the pillow using the included ropecentering method; corner sealing rings help keep the pillow in position. Corner rings and accessible placement make debris removal and cleaning straightforward. No special tools required for installation, removal, or storage. Use scenarios Winter freeze protection: Place the pillow under a winter cover to prevent liner damage from ice pressure and fluctuating water levels. Offseason storage and maintenance: Rapidly deflate and fold the pillow for compact storage between seasons, saving space and time. Extended outdoor use: Use the pillow when leaving a partially open pool during cool weather to maintain buoyancy and reduce stress on the liner. What makes it stand out Purposebuilt as an ice compensator specifically for pool liners. Coldresistant PVC construction for dependable winter performance. Double valve for fast air transfer and a compact, foldable form factor. Simple ropecentering and corner rings for tool installation and easy cleaning. Included features summary Ice compensator function for liner protection quality PVC, coldresistant structure Double valve system (fast inflation/deflation) Ropecentering method and corner sealing rings Compact, foldable storage Choose the Pool Winter Air Pillow to simplify winterizing, reduce spring needs, and provide dependable protection for your pool liner throughout the cold season.