Bestway 24ft Rectangular Frame Pool cover provides fantastic insulation and prevents beetles, leaves and outdoor debris from accumulating inside a 24ft Rectangular Frame Pool. The solar swimming pool cover is laid out on the water’s surface when a pool isn’t being used. It’s made from a durable material strikingly similar to bubble wrap. These tiny air bubbles insulate a pool by absorbing solar energy, storing it and using it to warm the water. It also reduces evaporation, saving you cash on constantly topping up the water. Money is also saved on cleaning and maintenance because it prevents the build-up of pool debris. Bestway 24ft Rectangular Frame Solar Pool Cover is a must-have accessory for owners of a 24ft Rectangular Frame Pool. It can even provide insulation when the sunshine season has ended!