The Vevor solar pool cover is designed to help keep pool water warmer for longer by absorbing heat during the day and retaining it overnight. Its 8 mil bubble construction creates an insulating layer that helps reduce heating costs while extending the swimming season. Made from PE material, it is built for outdoor use and can be trimmed to fit irregular pool shapes. The cover also helps reduce water evaporation by up to 95% and keeps out leaves, dust, and other debris. Ideal for residential and commercial pools.