A GREAT CHOICE FOR SUEDE, NUBUCK AND ROUGH-OUT LEATHER.Nubuck, suede and rough-out leathers no longer have their own naturally-occurring protective barrier. It’s important to waterproof them regularly because these types of leather are more susceptible to damage without proper care. Our Waterproofing Spray won’t cause them to darken in color, and is breathable, which means it blocks water from the outside while letting moisture escape from the inside. This waterproofing spray is also ideal for preserving the color on full-grain leather boots.Safe on fabrics like Cordura and Nylon.