Check the listing for details. Intex Solar Pool Water Heater Mat 47" x 47" Gallon Above Ground - Black. Condition: New, Made in China. Listed at 24.99 USD. The Intex Solar Pool Water Heater Mat is a black solar mat suitable for above ground pools. With a power source of solar energy, this product from Intex is designed to efficiently heat pool water using the sun's heat. The 47" x 47" size makes it compatible with various pool sizes, providing a convenient and effective way to maintain warm water in your pool or spa. Perfect for outdoor living and yard maintenance, this solar water heater mat is a practical addition to any pool equipment collection.The Intex Solar Pool Water Heater Mat is a black solar mat suitable for above ground pools. With a power source of solar energy, this product from Intex is designed to efficiently heat pool water using the sun's heat. The 47" x 47" size makes it compatible with various pool sizes, providing a convenient and effective way to maintain warm water in your pool or spa. Perfect for outdoor living and yard maintenance, this solar water heater mat is a practical addition to any pool equipment collection.