As you might expect, donning over existing fabrics comes with a compromise between a good, snug, wrinkle-free fit and light coverage. It's not easy to put on - far from it. If you do, however, you'll end up with a pretty tight set of seat covers. There are still areas where you can see the fabric underneath so you wouldn't believe the seats are leather, but if you're looking to avoid spills and have a more durable finish then this is for you. I'm pretty impressed. They're not very comfortable, but after all, they're vinyl seats.