Aquabuddy 9.5X5M Solar Swimming Pool Cover 500 Micron Isothermal Blanket Made of premium low density polyethylene 500 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. Saving you money and giving you more time to enjoy your pool!