I found this car seat protector at a garage sale and use it in my car for my grandson's car seat. It is a great way to protect your car seat from being damaged by the indentations made from car seats or booster seats, and also protects the fabric from being stained from spills and dirt, or being scuffed by little shoes. This is a padded, washable nylon cover that fits on the seat and also has a nylon bag that hangs over the front of the seat for toys, snacks, etc. It has features that hold it securely in place. I have never had it move around at all on the seat. I have washed it several times and it still looks great.
I would recommend you get one of these if you want to help keep your car looking great.