Snoozer Pet Safety Harness and Adapter is the best way to secure your dog in the car. It is the only harness to be crash tested at the same standards of a child safety seat (30 lbs. at 30mph). The harness secures your dog in back seat in the event of an accident and helps avoid injury to your dog during sudden stops. The unique vest design fits around your dog’s chest. Available in Red & Black for size Exta Small or Silver & Black for sizes of Small, Medium, Large, and Extra Large.