Seven Top Dog Car Seat Cover Waterproof Cat Dog Pet Single-seat Car Mat Seat Cushion Blanket Hammock Cushion Protector Material: durable waterproof Oxford cloth Adjustable straps attach itself to vehicle's front and rear headrests. Adjusts to fit most vehicles This hammock protects upholstery and prevents your dog from jumping up front and causing an accident. This uniquely designed hammock attaches to the vehicle's front and rear headrests creating a barrier between the front seat and the back seat.