Feature: 1. Protect Your Swimming Pool: Cold outdoor weather in winter can cause the pool water to freeze, and our pool pillows can help you disperse the pressure of the ice on the pool walls. It is recommended to inflate the pool pillow to 70 percent to make room for the expanding ice, in order to avoid ice damage to the pool. When you cover the pool with a dust cover, it can also prevent snow or rain from accumulating in the center of the pool cover, causing it to collapse. 2. PVC Material: This round above ground swimming pool pillow with a diameter of 4 feet (before inflation) is made of 0.3mm thick cold resistant PVC material, which can be used with confidence even at temperatures as low as ‑10℉ (‑25℃). The edge design of the swimming pool pillow has a double seal, making it less likely to leak or be torn by ice. It will be the perfect companion for your swimming pool! After inflation, the diameter is approximately 3 feet and the height is 1.9 feet. 3. Inflatable Pillow with Fixing Rope: The packaging includes a 15 meter fixing rope, which will be the perfect match for fixing the pool pillow to the center of the pool. Preventing the water tank from moving on top of the water tank and evenly distributing the ice pressure on the tank can effectively prevent rainwater, snow, and ice from accumulating in the center of the tank, leading to the collapse of the tank cover. 4. Easy to Use: This floor inflatable swimming pool pillow is very easy to inflate, and you only need to use a pump or a household electric air pump to quickly inflate. Then connect the rope through the four holes on the edge of the winter air pool pillowcase to the center of the pool for quick installation. Note: It is recommended to inflate the inflatable cushion to 70%. 5. Widely Used: Not only can it be used for various types of above ground swimming pools, but it can also be paired with protective covers for winter protection of outdoor fountains, spa centers, and other furniture. Avoid damaging outdoor facilities due to the accumulation of rainwater, snow, and fallen leaves, and help maintain the cleanliness of outdoor furniture. Specification: Item Type: Swimming Pool Pillow Material: Environmental PVC Weight: Approx. 855g / 20.2oz Diameter Before Inflation: Approx. 1.2m / 4ft Diameter After Inflation: Approx. 90cm / 3ft Height After Inflation: Approx. 58cm / 1.9ft. Package List: 1 x Swimming Pool Pillow1 x Rope1 x Repair Patch