Dependable safety for growing children, our Diono Monterey XT Booster Seat is super portable, easy to store and lightweight to take with you on every adventure. Your big kid will love traveling with two swivel cup holders. Sometimes the joy of the journey has hazards along the way - that's why we engineered the Monterey XT using reinforced materials and added side impact protection to provide enhanced safety as your child grows. Our designers engineered this booster to accommodate growth spurts without sacrificing on protection. With 11 headrest positions, the Monterey XT adjusts for a superior fit and the larger base seat supports growing legs, letting your child sit back and enjoy the ride. We've thought of everything so you don't have to