Polar Plus 18' x 36' Rectangle Left Side Step Winter Pool Cover with 15 Blue 8 ft. Double Water Tubes

Heavy Duty Winter Pool Covers Keep Your Pool Safe Through Harsh Weather

The Polar Plus pro-strength 18x36 winter pool cover gives you great durability along with affordability. The rectangular winter pool cover protects your in-ground pool from falling leaves, dirt, twigs throughout the winter. The black underside of the cover also helps block sunlight from reaching your pool water, reducing the chances of algae growth if the weather warms up.