We needed something to protect the back of our seats from our kids' feet. This does an excellent job. Price is okay since it is just a piece of plastic cover but considering that there is nothing else similar on the market, I am still happy with my purchase.
These do what they are supposed to, however, they don't seem to fit my backseat well for my one rear-facing child (it's too tight, causing it to 'bulge') and the top corners flop down on the back of the front seat for my forward facing child. They don't look as perfect as they do in the pictures, but they keep the dirt off which is the main thing.