Midwest Canvas Heavy Duty Solar CoverThe Midwest Canvas Heavy Duty Solar Cover is an extremely beneficial product for pool owners to reduce costs and effort to regular maintenance schedules. Solar covers help to conserve water from evaporation and reduce cleaning time by protecting the pool from debris and dirt entering the water. Using a pool solar cover is a guaranteed money saver addition to your pool. 8 Mil Thickness 3 Year Warranty Increases water temperature in pools Cut nighttime