The Premier Pet® Car Safety Harness keeps your dog safe and secure during travel. Once your dog steps into the harness, simply tighten down the adjustable straps until it fits snug around him/her and attach the harness to any seatbelt. When strapped in, your dog will be allowed a range of motion unless there is a sudden stop. The harness will then lock, using 2000+ lb. strength tested nylon to secure him/her to the seat. With your dog secured to one location in your vehicle, driver distraction is reduced, and you and your dog can travel safely together.