Product Description:This solar pool film sits directly on the water surface,inside your pool´s edges,and can thereby raise the temperature of your pool water by up to 1°C,depending on the amount of direct sunshine. With PE bubbles all over its surface,the heat is contained much longer. At the same time,it helps reduce chemical consumption,as well as water evaporation.Specification:Fabric: PVCThickness: 400umBubble Diameter: 16mmHeight: 4.0+0.1mmMaterial: Thick PE film with air chambersColour: BlueProduct Features:Reduce water evaporation by 95%.Retain heat to keep water at a consistent temperature.Package Content:1x Solar pool Insulation padsNotice:★ 1. Product size is purely manual measurement,there is 1-3cm error,please prevail in kind.★ 2. Please be reminded that due to the light and screen difference,the item's color may be slightly different from the pictures.★ 3. The above measurements are all width x height in centimeters and not inches.