The term waterproof or repelling describes something that is unaffected by water or covered with a material that does not allow water in. Such items are suitable for use in wet environments (outdoors) or under water. Leather that has been dampened or exposed to excessive amounts of moisture loses its natural oils; leaving leather items stained, discoloured, dry, and stiff. Waterproofing involves applying a chemical shield that will help to preserve leather's quality, workmanship and value.

Waterproofing agent in leather extends the life of leather and making it more practical. In short, it guards the leather from getting affected by water.