Aquabuddy 7M X 4M Solar Swimming Pool Cover BlueMade of premium low density polyethylene 400 Micron and isothermal design this solar pool cover is extremely durable and can efficiently and effectively distributing the heat to the water. It allows sun heat to penetrate to the pool increasing the temperature in the water as well as can significantly reducing water evaporation. It helps in keeping the pool clean reducing maintenance time and cost for filtration and pumping. Maintaining your swimming pool will no longer be expensive. Get the best of natural resources and save money on chemicals and water It is especially designed for cooler climate countries for instance like Australia. It is designed to extend your swimming period significantly reducing heat losses. It also reduces the amount of water loss due to evaporation as well as the use of chemical products.