Weighing 9.25 oz. per square yard with 24 brilliant colors from which to choose. Genuine Sunbrella is 100% acrylic and undoubtedly the longest lasting boat cover and top fabric made. This premium synthetic material is solution dyed so the brilliant colors are as fade-proof as you can get. Sunbrella is strong, water-repellent, and resists mildewing. It's world renowned for prolonging sun rot from ultraviolet rays. Sunbrella is used on boats from dinghies to yachts when nothing but the best will do. Up to 10-year limited warranty. Orders for Covermate Exact-Fit Covers cannot be canceled and are non-returnable and non-refundable. For a free Sunbrella Sample Card, order item number 314599. If you need help selecting the correct Exact-Fit Cover for your boat, please use our Live Help or call us at 1-888-OVERTON, and we will be happy to assist you. Please have your boat year, make, and model available. Exact Fit Covermate Sunbrella Boat Cover For STRATOS 285 PRO XL