Waterproof fabric is a type of material designed to resist water penetration, making it ideal for outdoor gear and clothing. This fabric is often treated with special coatings or made from synthetic fibers that repel moisture, ensuring that the wearer stays dry in wet conditions. Common uses of waterproof fabric include rain jackets, tents, and outdoor gear. These materials are tested for their ability to withstand water pressure, often measured in millimeters. The higher the rating, the more waterproof the fabric is, providing better protection against rain and other moisture sources.