I almost always have my second row bench seat folded down because we travel with a dog. I had installed the Honda rear seat protector covers when I first purchased the car. They were pretty easy to install. They cover the rear of the seats very well, leaving no areas where the dog stands on the seat back itself, only the protectors.
Had to line them up with pieces of tape underneath them to locate where to drill the holes. Then insert a sleve which a screw goes into and holds the covers in place. They have held up very nicely and look good.
The link makes them appear to be grey, but mine are black.