Brand NEW 5 x 5 Ft Pool Pillow for Above Ground Pools Hyperzoo Heavy Duty Pool Closing Kit for Above Ground Upgraded 0.5mm PVC Cold-Resistant Inflatable Air Pillow for Winterizing with 49.2ft Rope As it freezes and expands, water in above-ground pools can make the walls crack. This Pool pillow for above-ground pools is the solution: A poool pillow serves as an ice compensators, it floats on the surface of the water during winter, helps to distribute the pressure of ice as it forms on the pool's surface. Efficiently protects your pool from winter damage. This pool pillows for closing winter is made from 0.5mm PVC (almost 3 times thicker than the standard 0.15 mm), very durable and won?t easily leak, tear or deflate even at temperatures as low as ?10F (?25C), What's more, it can also handle the heat up to 180F (80 C), ensures your pool remains functional and enjoyable for years to come. This pool closing kit for above ground is equipped with an updated dual boston valve, allows inflating and deflating 10X faster, more convenient and airtight to last all season.(Note: Air pump NOT included) Inflate the air pillow for above ground pools to 70%-80% of its full capacity to allow the pool closing pillow to expand and contract. Please close the 2-stage valve caps tightly to avoid air-leaking. While primarily used for winterizing pools, a pool pillow can also be used in other seasons for maintenance tasks such as helping to adjust water levels. Absolutely a cost-effective investment in extending the life of your pool and reducing maintenance expenses. An air pillow can also be used in other water features like hot tubs or decorative ponds, to mitigate ice damage and preserve the integrity of the structure. This listing includes 1 pillow and rope See pictures for more item details, Trusted Seller -Fast Ship!