Many law enforcement agencies provide armor shields to protect their officers on duty. The shields are made of almost an inch of dense KEVLAR fiber wrapped in a nylon fabric, and are very expensive to replace. Large shields can run up to $2,000 each. Normal use conditions cause the thin protective nylon fabric to fray and tear easily, exposing the KEVLAR underneath to moisture. Water causes KEVLAR to expand, and the shields deteriorate quickly. With such a high price tag, law enforcement needs a way to extend the service life of its protective equipment.