4 x 4 Ft Pool Air Pillow for Above Ground Pool, Winterize Pool Closing Kit Winter Pool Cover Pillow, Durable & Cold Resistant 0.4mm PVC Material Pool Pillow for Winterizing, Rope Included - LIBERRWAY, PAP-4401

• ★Protect Your Pool: When it freezes and expands in winter, the water in the pool can make the walls crack. 4' x 4' pool pillows for above ground pools can help to help the pool share the pressure and avoid the pressure on the pool walls and lids caused by the pool's ice expansion. ★Upgraded Material & No Leaks All Winter: Our pool pillow is made of 0.40mm thick high-density cold-resistant material, which can makes the product be used for years and prevent air leakage to protect your swimming pool all winter. Unlike the general thickness in the market is 0.15-0.2mm, easy to leak and cannot last for a winter. ★Double layer valve & Easy to inflate: Pool air pillow suitable for most of air pumps with nozzle less than 0.75''. Airtight to last all seasons. Inflate the pillow to 80% of its full capacity would be better for your pool and the pillow. Please press the 2-layer lids tightly to avoid air-leaking. ★Reinforced Grommets: The pool cover pillow designed with 4 reinforced grommets and two 5 meters long ropes. You can freely cut the ropes to length that fits your above-ground pool to provide easy centring. ★100% Satisfaction Guarantee: If you have any questions, please contact us freely. We will be happy to help you.