【Pool Air Pillow】: You will receive 1 inflatable pool air pillow with a diameter of 120 cm/47.2 inches. Our pool air pillow helps to disperse ice and reduce pressure on the pool wall when cold weather causes pool water to freeze in winter. It effectively protects the above-ground pool wall and pool cover from the pressure caused by expanding ice. 【Material Quality】: The winter pool air mattress is made of high-quality material with a double-sealed design. It will not easily leak or burst due to ice. It is specially designed for the cold winter months and is an excellent companion for your pool. 【Easy to Use】: Round winter pool mat. This round inflatable pool mat is very easy to use. It can be quickly inflated with just a regular electric air pump at home. It is recommended to inflate the pool mat to 70% to allow room for expanding ice. The rope is then attached to the four holes around the edge of the pool mat and secured in the center of the pool. Quick and easy. Note: This product does not include an air pump. [Pool Air Mat Winter Accessories] The pool mat has four holes around the edge to attach it to the pool with a rope. This ensures that the inflatable mat stays in place and that ice pressure is evenly distributed across the pool when it freezes. This pool mat is storable and reusable. [Wide Range of Applications] The winter pool cover can be used not only for all types of above-ground pools, but also as a protective cover for winter storage of fountains, spas, and other outdoor furniture. Prevent damage to outdoor installations due to rain.