Carrie® Seating System solves the positioning problems of day-to-day living. The unique molded contours of the Carrie Seat provide superior positioning compared to seats with upholstered pads. The anti-thrust seat shape helps maintain proper pelvic position. Meets F.M.V.S.S. 213 - Crash Test Approved. The flexible Carrie Seat can be used: At home - on a couch or in a chair. Tether strap secures seat in chair. In the car - it's a crash-tested child restraint system. Secures using standard vehicle seat belt. At school or on the bus - crash-tested with standard wheelchair tie-downs. On an airplane - elementary seat has been approved for use on an airplane. Carrie® Seat Features: Shock-absorbing foam, Seamless covering is impervious to fluids, cleans easily, Lightweight seat, easy to remove and position, Height-adjustable neck stabilizer and four-point adjustable harness.