A special fiberglass reinforcing fabric that can be used with POR-15 rust preventive paint to bridge gaps and repair holes in sheet metal. Handling Instructions: Do not handle fabric with bare hands. Because this POR-15 PowerMesh Fabric is a special type of fiberglass cloth, the fibers may pierce your skin and you will experience discomfort. Wear a pair of gloves (or other protection) whenever you handle this cloth. As you cut the cloth, some fibers may fly into the air, so be sure to wear a mask while cutting. Please note that there is one large piece of cloth in this envelope.