Sunbrella SeaMark is the benchmark in boat protection, 100% waterproof with Sunbrella fabric on the outer face and a special Sunbrella textured marine- grade colour-matched water-resistant vinyl on the back. The application (winter covers, camper closure and external protection), the main features and benefits (100% waterproof, anti-mould and UV resistant) and the design make this product the optimum protection against the elements.