There are 2 Sunbrella coated products. One is Sea Mark The wholesale supplyer's catalog says "Sea Mark An exterior grade, waterproof marine fabric made by combining Sunbrella fabric with a textured marine grade vinyl. Ideal for boat tops and covers. Also used for entrance canopies, upholstery, tonneau covers and equipment covers. Backed by a five-year manufacturers liimited warranty." It weighs 16 oz per sq. yd. as opposed to Sunbrella which is 9.6 oz. per sq. yd. From the catalog information Sunbrella provides the warranty for the product. The other product is Sunbrella Plus a solution dyed woven acrylic polyurethane back coated. "A highly moisture resistant Sunbrella Plus is dimensionally stable yet soft and easy to work with. Bright and color fast with excellent abraision resistance. Ideal for use in Biminis, Dodgers, cockpit covers, travel covers, camper tops, and canopies." This product weighs 10 oz. per square yd. Either of these products should be available from your local canvas worker. Our experience is that the Sea Mark is not breatheable and weighs a ton, however it is water proof. Both products carry the full Sunbrella warranty. The Sunbrella plus is probably a closer competitor to Stamoid than Sea Mark and looks more like fabric than plastic. Louise Caper CanvasWorks (currently on hiatus heading for the Great Loop) Aboard Caper in Gloucester Harbor I can't > remember > where to get it though, or what it's name is. Someone treats > Sunbrella > then sells it under another name. Maybe someone else on the list > can > list the source/name? >^..^<