Diono Ultra Mat Seat Protector Protect your vehicle's leather and upholstery from dents and scratches when using a children's car seat, while allowing the car seat to be securely installed. Diono Ultra Mat is crash tested, ISOFIX compatible and composed of high-density foam. The durable, tightly woven material resists dirt and liquids meaning easy clean-up once the journey is over. Believe us the mess is inevitable. Suitable for all car seats.