The Maestro Keller features RightFita, a belt positioning system, including an innovative headrest design that allows the vehicle belt to self-adjust to your child's height while in booster mode. Enhanced side walls and head support provide comfort and safety for the child. Sporty style elements appeal to children, as will the integrated cup holders with flexible stripe design. The seat accommodates children ranging from 20-100 pounds. This combination booster provides an exceptional value for a seat with such a wide array of innovative features. Protecting children is our core mission at Evenflo. For almost a century we have been a leader in safety, innovation and education. Knowing that one in four automobile accidents are side impact collisions, we believe it's important to go beyond the current government standards when designing the next generation of Evenflo car seats, including the Maestro Keller. Side impact tested. Meets or exceeds all applicable federal safety standards and Evenflo's side impact test standard designed and tested for structural integrity at energy levels approximately 2x the federal crash test standard. RightFita belt positioning system creates a snug fit over the hips and chest of the child. In combination with the internal harness, this seat is sized to fit a wide range of children as they grow. Up-front harness adjustment for easy access.Integrated armrests and dual cup holders for drinks. Removable and washable pad and pillow.