A preferred fabric in the marine industry, Sunbrella is made from solution-dyed woven acrylic fibers that provide almost 100 percent UV opacity to stop UV rays from reaching the gel-coat, graphics, rubber and seating material on your watercraft. The solution-dyed process is eco-friendly because the color goes into the polymer before the fibers are extruded, so the color is solid throughout the woven fabric. Sunbrella is very fade resistant and that's why you'll see it in marinas used for sail covers, bimini tops and boat enclosures, and it's also used for most high-quality outdoor furniture, patio umbrellas and awnings. The acrylic fibers naturally resist moisture, rot and mildew - for maximum long-term UV protection Sunbrella is the best choice. Sunbrella covers carry a five-year limited warranty to the original purchaser. (Covercraft will repair or replace any cover that becomes unserviceable during normal use - subject to factory inspection).