This Hunter 3-in-1 harness is a lightweight and comfortable alternative to collars, eliminating pressure around the neck. This durable nylon lined chest protector can be worn for a long time. Combined with a leash, it is ideal for training animals that pull on walks, or to prevent them from slipping out of their collar. In cars, it reduces the risk of injury, especially during sudden stops. In addition, it reduces distractions in the car while allowing a certain freedom of movement. To use this harness in the car, simply pass the rear seat seat belt under the strap on the back of the harness, then buckle.