Inspired by a dog run, the Kurgo Auto Zip Line Dog Restraint System allows back-and-forth plus sit-and-stand movement, but also restricts your dog's access to the front seats, allowing you to drive distraction-free. This multifunctional restraint system is simple to use; the sturdy webbed strap attaches to any two fixed points and the adjustable leash easily connects and disconnects from the zip line when getting in or out of the car, which means instant transition from vehicle restraint to walking lead. The system is ideal for dogs of all life stages, including Small, Medium, Large and Extra Large breeds.