The Seat Saver from Prince Lionheart can be used in two stages.Stage 1 - The bottom tray is used alone with rear facing infant seats. Stage 2 - The back attaches to the bottom tray for use with forward facing toddler and booster car seats.The high-density foam construction prevents depression damage to your upholstery that is caused by car seats, while a lip around the edge of the bottom tray catches any spills or crumbs. The bottom tray keeps all cars seats level and in the proper position, and the kick plate protects upholstery from shoe scuffs. The Seat Saver works with all infant carriers and carseats including ISOFIX compatible car seat systems, and is compatable with all car models. Available in black.