This inflatable hot tub cover is designed to fit all 4-person square hot tubs up to 118cm, with dimensions of 110x110cm, ensuring a snug and secure fit. It features innovative heat insulator technology to retain heat, saving energy and reducing running costs. The cover offers excellent protection against rain, preventing overflow and keeping your spa clean. Its efficient heat insulation keeps spa water warm and inviting for year-round use. Made with high-quality materials, this durable and reliable protective cover is designed to last, providing peace of mind and extended spa enjoyment.