This crash-tested dog car harness keeps you and your pup safe while driving. It has been designed as a dog safety harness, not a converted walking harness. The all-steel Nesting Buckle System is based on the engineering for harnesses used by rock climbers and linesmen ensuring strength and safety. With five adjustments points, it's easy to get a near custom fit for any dog, regardless of size and proportions. The chest pad reduces stress on the trachea and sternum while dispersing kinetic energy across the chest of the dog. This is important during those rare, but dangerous impact crashes. Because it's designed with comfort in mind, our Enhanced Strength Tru-Fit Harness can also be used as a no-pull walking harness. There's a halt ring on the front chest plate. If your pup tries to pull, it will just turn him around effectively training him that pulling will get him nowhere! Steel nesting buckles 5 adjustment points and broad padded chest plate for a comfortable fit Secures dog in the car to avoid driver distraction! use with any seatbelt (tether included) or Kurgo's Auto Zip Line (sold separately) Tensile-strength tested, dynamically tested, and crash tested