Winner of Fine Woodworking's Best Overall Choice Award, High Performance Top Coat is the hardest, most durable consumer polyurethane top coat on the market today. It contains all the consumer friendly characteristics of PolyAcrylic Blend. In addition it contains a UV Stabilizer to protect it from breaking down in sunlight and to protect the underlying stains from fading. And with its pure polyurethane durability, it can even be used on floors. This is the most durable product. Not recommended for outdoor use.