Does anyone know of a good back seat cover for cars that also covers the floor? I've had a hammock style seat protector and the buckle straps that connected it to the front seats ripped straight out the fabric. I've been eyeing a seat protector on Amazon that covers the back seat, goes down to the floor boards, and then up the back of the front seats (https://www.amazon.com/Deluxe-Quilt...1&rnid=2941120011&s=pet-supplies&sr=1-77&th=1). The only problem with it is that it's only water resistant and not waterproof. Does waterproof versus water resistant make that much of a difference? They aren't getting in the car wet 24/7. Only rare trips when they get to go swim in the pond and we towel dry them afterwards anyway.