2000 continuous feet allows for longer boundary wire runs without the need to splice two lengths of wire together. Our wire is designed to last season after season without deteriorating from elemental exposure, such as heat, cold and moisture. The sturdy polyethylene jacket is more than twice as thick as the vinyl coating you see on the factory packaged boundary wire. Buried or installed above ground, the eXtreme Dog Fence brand wire is created with longevity in mind. Invest in the life of your pet fence now, and save yourself from the time and headaches associated with tracking down breaks, or replacing your entire boundary wire in the years to come. Let eXtreme Dog Fence brand wire bring you the peace of mind in knowing that your electric dog fence will stand the test of time.