One cover, two configurations. Zippers along the sides let this seat cover convert between a full hammock that hangs across the rear footwell and a flat bench that leaves room for a person beside the dog, and the pad inside is removable, so the dual-size use is a matter of unzipping rather than owning two products.What it is really doing is protecting the upholstery. The shell is 600D Oxford over a PVC-backed 210D Oxford layer, crafted with durable materials that are not easy to wear or tear, and it stands up to the scratches, spills, and dirt a dog brings into a car on a wet day.Side mesh windows are cut into both flanks. They give the dog a better view out, which settles an animal that would otherwise be staring at fabric, and they keep air circulating through the enclosed space rather than trapping it against the seat back.Installation uses anchors, fixing buckles, and side straps together, so the cover pulls taut instead of sliding down the seat once a dog moves on it, and the zippers are robust enough that they will not slide down during use. A storage pocket holds toys, treats, and other essentials so nothing loose rolls around the footwell.Cleaning takes whichever method suits the mess: a damp cloth, a vacuum cleaner, a shower rinse, or a washing machine. Beyond the back seat it lays in a car trunk as a large resting area, or goes down on grass for outdoor picnic time. Measuring 25 by 17 by 21.5 inches at 2 pounds in black, it suits medium and small pets.