Designed for ground pools and compatible with almost all ground pool models. Quick inflate and deflate: the cushion inflates and deflates rapidly for easy setup and removal. Easy installation: simply pull the included rope through and tie the cushion to your pool using the reinforced eyelets. Protective performance: helps create surface tension, protects the pool wall, and reduces rain, snow, and leaves on your winter covers. Winter protection with tarps: when placed under the pool tarpaulin, it lifts the cover away from the water surface to help prevent water on the cover from freezing. Key attributes at a glance: inflatable pool cushion, broad compatibility with ground pools, reinforced eyelets for secure fastening, rope included for simple mounting, designed to support winter cover performance. Use scenarios 1) Winterization in colder climates: place under the tarpaulin to keep the cover elevated from the water, reducing freezing risk and debris buildup. 2) Debris and weather protection: during offseason, keeps rain, snow, and leaves off the pool cover, helping maintain a cleaner cover. 3) Seasonal setup and removal: fast inflation and deflation streamline installation and removal between pool seasons. Materials and sizing note: the description specifies suitability for almost all ground pools and mentions an inflatable cushion with reinforced eyelets and a rope for mounting, but no specific material or exact dimensions are provided.