Formulated for waterproofing and conditioning the leather portions of lightweight hiking boots. Will not harm waterproof boot liners beneath the leather and allows the leather to still breathe.imageSpecifications and Features: Formulated for waterproofing and conditioning the leather portions of lightweight hiking boots Will not harm waterproof boot liners beneath the leather and allows the leather to still breath Map Seal: Encases maps in a clear, waterproof and flexible film. Water based.