Keep your best friend safe while giving him the freedom to enjoy outdoor play. The PetSafe® Basic In-Ground Fence™ is a do-it-yourself weekend project for most yard shapes and sizes. In this kit you will receive 500 feet of wire to create up to a 1/3-acre area to keep your best friend safe and secure. With the purchase of additional wire, you can contain up to a 5-acre yard. This in-ground fence comes with 1 PetSafe® Deluxe UltraLight™ Receiver Collar that fits dogs who weigh 8 pounds or more and adjusts to fit neck sizes between 6-26 inches. The waterproof, battery-operated collar has a tone-only mode and 4 levels of adjustable static correction. This system includes a unique run-through prevention to help keep your dog from running through their set boundary. If they attempt to run through, the static correction level will increase to encourage your dog to stay inside their safe play space. If you have more than 1 pet at home, simply purchase as many additional compatible receiver collars as you need so all your pets can use the same in-ground fence. With just 2 short weeks of training, your best friend will enjoy roaming and exploring their new play area! PetSafe® brand is here to help you and your pet live happy together™.