Saphir's Super Invulner Spray is used for protecting, waterproofing, and providing an anti-stain treatment for all leathers, suede, nubuck and textile items. It's special slow-drying formulation ensures that it will not leave white marks or discolor leathers, which can occur with less-expensive, fast-drying formulations. The Super Invulner is designed for and is safe to use on the most expensive, delicate materials.