Aquaseal Map Seal is a high polymer coating that protects the map from weather and time by encasing them in a permanent, waterproof, clear and flexible film. Treated maps can be folded repeatedly without damaging the map. Can also be marked by pen or pencil. This water based, environmentally friendly formula is very effective and easy to use. Can be used on all types of paper maps, nautical charts, and many other paper products. Encases maps in a permanent, waterproof, clear and flexible film. Maps can be folded and creased, over and over again, without damage, tearing or falling apart. Use on all types of maps, nautical charts, blue prints, lab documents, important papers, recipe cards you name it! One bottle coats 6 to 8 topo maps, front and back. 8 fl. oz. bottle with applicator. Weight: 9.4 oz.