Premium Materials: This square hot tub cover is made of high quality Oxford cloth with excellent waterproof performance, the surface uses silver plating technology to prevent penetration. High Protection: This outdoor spa cover has a large size to protect your outdoor tub from damage caused by rain, snow, wind and dust. It also has high thermal insulation, avoiding exposure and damage caused by low temperature for all seasons. Elegant Design: This outdoor spa furniture cover is designed with a drawstring at the bottom, which is adjustable and stays firmly on your tub. It is highly recommended to remove excess water from the top of the cover during the off-season. Widely Use: This square spa cover is perfect for hot tub, outdoor portable tub and outdoor portable pool. Satisfaction Guarantee: Customer satisfaction is our first priority, money back guarantee and excellent customer service are what we can do for you. If you are not completely satisfied with our products, please feel free