Swimming Pool Cover, Rectangle Solar Swimming Pool Blanket Insulation Film, Dustproof for Outdoor, Garden, Backyard, Summer Water Pool Party Patio Covers Feature: Keep warm to keep the water temperature constant. Use the natural power of the sun to heat water. The drain hole can prevent ponding. Floating on the water.Reduce water evaporation by 95%. Prevent leaves and debris from entering the pool, reduce maintenance time. Suitable for swimming pool thermal insulation blanket.Easy to use, reusable bag for easy storage.