Wolman RainCoat One Coat Transparent Stain is a clear water-based exterior water repellent designed to provide protection against water damage and UV graying. It beautifies wood with sheer natural wood-toned color, which allows the wood's character to show through while protecting the surface from water damage.The NeverWet hydrophobic technology properties and superior water repellency help maximize resistance to wood cracking, checking, splitting and warping.