Features ALWAYS KEEP POOL CLEAN: Our swimming pool cover allows you to maintain clear and clean water. It is designed to prevent leaves and other unwanted insects from falling into the pool and helps delay the formation of algae. PRACTICAL DESIGN: Our tarpaulin is equipped with 2 drain nets in the center which have a dual function. Firstly, they allow rainwater to flow into the pool rather than accumulating on the cover. In addition, rainwater passing through the nets helps twigs or insects move towards the edges, making cleaning easier. MAINTAIN A COMFORTABLE TEMPERATURE: Our double thickness pool cover has blue side which shields the sun UV rays and silver side help to maintain heat. This combination helps keep the pool water at a comfortable temperature, especially during nights. FINAL ACTUAL SIZES: 4x8m; 4x9m; 5x10m; 8x14m. Product DescriptionProduct Description VOUNOT Swimming Pool Cover Rectangular Heavy Duty Double Layer Pool Protective Cover with Drain Net, Aluminum Eyelets Waterproof Cover, 4X8m Safety Warning Always supervise children around the pool and ensure the cover is properly secured to avoid drowning hazards, entrapment, or suffocation. Be cautious when handling the cover material to prevent injury.