Our hot tub cover is designed for outdoor use, with dimensions of 79"D x 33"H (2000D x 850H mm). Please note: Be sure to measure the diameter of your hot tub before ordering to ensure a proper fit. | Vevor | | Outdoor Hot Tub Cover, 79 x 79 x 33 Inch Weatherproof and Waterproof Hot Tub Cover Protector | Gray | Best Buy