Patiojoy 20ft x 40ft Rectangle Swimming Pool Cover 12-MIL Heat Retaining Pool Solar Blanket for Above-Ground & In-Ground Pools

【Jump into Warm Water】One side of this swimming pool cover features thousands of tiny bubbles, which work together to collect heat from sunlight and help to raise the pool water temperature by up to 14-27℉in approximately 5-7 days of consistent sunlight(Please Note: The effect of heating is influenced by the environment). It helps maintain pleasant temperatures on summer nights and extend the swimming season. 【Keep Your Pool Clean & Tidy】This pool solar blanket can not only keep your pool water warm, but also protect water from dust, leaves or any other pollutants. What's more, the pool cover prevents 95% of pool water and chemical evaporation, which avoids wasting water and helps to extend the life of your swimming pool. (Please Note: Bubble-side down) 【Premium & Durable Material】This heat retaining pool solar blanket is made of high quality PE material with 12-mil thickness, which is sun-proof, anti-tear, anti-aging and safe. With excellent weather resistance, this solar blanket can be used outdoors for a long time.