Is useful when there aren't enough spare seat belt clips available. It's was really good for my recent weekend away. I sat in the back seat of the a car with three pooches. Two pooches had car restraints which needed the seatbelt clip. This headrest car restraint was useful, because it didn't need a seat belt clip. I needed the last seat belt clip for myself, and I used this restraint for my puppy Blossom.