Lay-Z-Spa EnergySense thermal cover for round spa 1.80 m x 66 cm Compatible with round spas with a diameter of 1.80 m and a height of 66 cm Insulates your spa with a double layer of thermal protection, making it up to 40% more energy-efficient DuraPlus waterproof surface material is strong and resistant to weather and regular use Zippered section for built-in pump or connection to an external pump Contents: 1 thermal spa cover Increases the energy efficiency of the spa DuraPlus waterproof surface material increases the durability of the cover Zippered opening for built-in pump or external pump connection Compatible with round spas up to 1.80 m in diameter and 66 cm in height Contents: 1 thermal cover