Pool Mate 18S-10SBD BOXPM Deluxe Swimming Pool Solar Heating Cover, 18 Foot, 10-Year Blue/Silver Description The Deluxe 10-Year Solar Cover includes a unique aluminum heat shield that traps otherwise lost heat back into the pool from the special aluminum underside. The extra heavy-duty material works to retain heat. Features: 14.6% greater heat retention Extends Swimming Season Increases Pool Water Temperature By Up To 10 Degrees Fahrenheit Or More Cuts Evaporation By Up To 90% Helps Retain Solar Energy And Keep Heat In Your Pool Product Details: Product Dimensions: 216 x 216 x 0.01 inches Item Weight: 16.2 pounds Manufacturer: Pool Mate Country of Origin: USA Item model number: 18S-10SBD BOXPM