Midwest Canvas 28' Clear Round Solar Cover CLEAR 28 RD 5YRKeep your pool warm and energy efficient with the Midwest Canvas 28' Clear Round Solar Cover. Its 12 mil thickness helps retain heat and reduces evaporation. The clear design allows maximum sunlight absorption for better warmth. Enjoy a longer swimming season while saving on heating costs. This solar cover minimizes water loss by preventing evaporation. It also helps reduce chemical use, keeping your pool balanced. The durable polyethylene material