Features: Our pool cushions creates a surfaces tension, protects your pool wall, reduces excess rain, snow and leaves on your winter cover. With inflatable pool cushions under the tarpaulin of your pool, pushes your pool covers off the water surfaces so that the water does not freeze on your pool covers. Make of thick PVC materials. strong and Enduring, It can resist sun and snow, leaves and dust. This cushion is designed for on ground pools. It can inflate and deflate quickly. When using, simply pull the included rope through and tie the pool cushions to your pool and the reinforced eyelets. Specifications: Component: PVC Diameter Option: 120cm/47.24inch, 150cm/59.06inch Package Includes: 1pc Winter pool cushions note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.