With a small car my dog has to travel on the back seat and, with the current horrid weather, my rear car seat was really suffering despite the use of towels etc. This protector, suspended from rear head rests to front head rests, completely protects the rear seat and the floor. However, you can still use the seat belt anchors (useful if you need to put the dog in a harness on longer journeys) by way of velcro access holes. In addition you can still carry a rear seat passenger as the cover partially unzips to allow one passenger to sit next to the dog if necessary. Thoroughly recommended for the smaller car.