Heavy-Duty Durable 600D Polyester Fabric-- Our hot tub covers are made of 600D polyester cloth and with waterproof PU coating,which resists tearing and UV rays to ensure long-lasting hot tub protection.Lighter and thinner than PVC coating,PU coating withstands up 300-degree heat,preventing the coating from peeling off and sticking to the hot tub.The cover with double-stitched and plus top waterproof tape at seams,resists overheat and rain cracks and boosts durability.
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