Keep the heat in, save energy and make your hot tub up to 40% more energy efficient with the Lay-Z-Spa EnergySense Thermal Hot Tub Cover. This insulating hot tub cover offers a double layer of thermal insulation, making your inflatable hot tub up to 40% more energy efficient. The Lay-Z-Spa thermal cover improves heat retention and allows you to heat the water much quicker. The Lay-Z-Spa thermal hot tub covers are made from ultra-strong 3-ply UV resistant and completely water repellent Duraplus material, the same as our hot tubs, and have double-stitched seams making them stronger and more impermeable. They reduce hot tub heat loss with a thick layer of insulating cotton and an anti-mildew treated interior.Compatible with all inflatable hot tubs up to 180cm in diameter, the hot tub thermal cover is easy to put on and take off. It has safety lock clips on an adjustable strap for a tightly secured fit meaning it wont budge, even in windy conditions, and provides a snug fit essential for heat retention. It includes a zippered door for a built-in pump and it can be removed for external pumps. The Lay-Z-Spa Thermal Hot Tub Cover will help you save money on energy costs by improving the heat retention of your hot tub. It is the must-have insulating accessory to reduce your hot tub running costs and keep enjoying your Lay-Z-Spa all year round. Bestway Round Thermal Hot Tub Cover X Hot Tub Accessories Grey