Our hot tub cover is designed for outdoor use, with dimensions of 85"L x 85"W x 20"H (2160 x 2160 x 508 mm). Please note: Be sure to measure the length and width of your hot tub before ordering to ensure a proper fit. | Vevor | | Outdoor Hot Tub Cover, 85 x 85 x 20 Inch Weatherproof and Waterproof Hot Tub Cover Protector | Brown | Best Buy