[Premium Material]: Made of 210D polyester canvas complex with eco-friendly vinyl backing. UV resistant and tough enough to withstand rain, hail, snow, dust, leaves and bird drops. [] FAN DESIGN: Don't worry about condensate and mold growth. Our pot lid for outdoor use is equipped with a vent which ensures good air circulation. [] Elastic cord: well-designed ventilation slots on two sides stay open to prevent blows Wind. High performance bungee cords allow adjustment for a snug, easier fit, especially in strong winds and bad weather. [] 100% UV-resistant coverage of the UV-resistant design prevents furniture from being exposed to the sun, making your spa look like new. [] Easy to clean: water, wipe with a damp cloth or rinse, then dry naturally, foldable, easy to transport and store.