Bestway 18ft Steel Frame Solar Pool Cover insulates an 18ft Steel Frame pool and prevents insects and beetles, leaves and twigs and other debris from accumulating inside it. The solar cover simply floats on top of the pool water. Durable material, which is similar to bubble wrap, has been used to design the pool cover. The air bubbles absorb heat from the sun and warm the water. Their insulating ability ensures the heat stays locked inside the pool.The pool cover can also save money on regularly topping up water because it reduces evaporation. Because it prevents debris from building up inside a pool it can also save cash on cleaning and maintenance. Bestway 18ft Steel Frame Solar Pool Cover is absolutely essential for owners of an 18ft Steel Frame pool. In fact, it provides such fantastic insulation that it can heat your pool for weeks after the sunny season has ended! Warning! Not a safety cover! Adult supervision is recommended at all times when children are around poolsThe 18ft Solar Pool Cover comes with one solar pool cover and is designed to fit above ground pools up to 5.49m (18ft) in diameterThis Bestway pool cover is made with a material that prevents heat from escaping and keeps pool water warm by utilising solar energyThe solar pool cover stops water evaporating due to dry winds or free-chlorine loss caused by UV raysKeeps debris out of your pool to help maintain healthy pool water and a clean swimming environmentSpecifications:Size: 18 ftColour: BlueMaterial: PEBrand: BestwayStyle: Pool CoverPackage Includes: Flowclear Solar Pool Cover, 18ft, Blue