Innovative design uses non skid backing, four (4) elastic straps with hooks, and adjustable headrest straps to hold the protector firmly in place. No sliding around for your dog when it jumps into the car or when you make a sharp turn. Seat belt openings to allow for seat belt use or to attach your dog’s harness and tether. Quilted nylon material is durable and comfortable for your dog. Machine washable and easy to clean. One size fits over 75-80% of cars on the market.(really…we checked the fit exhaustively) Dimensions Seat back 54″ x 26″, Seat surface area 54″ x 19″ 3 Dog Pet supply guaranteed for quality and craftsmanship.