The Leashboss Patterned Bungee Extension can make walks safer and more comfortable for you and your best friend. The attachment absorbs shock and helps to prevent injury when your medium or large dog jerks at the end of the leash. It helps to diffuse force to keep both of you safe from injury or muscle strains. The extension comes in a fun pattern with matching collars， harnesses and leashes (sold separately)， so your furbaby will look paw-sh. Highly visible reflective webbing helps to keep your pup visible in the dark. The extension is compatible with either a collar or harness， and you just clip it between the collar or harness and a short， long or traditional leash， jogging tether or retractable leash (sold separately).