This might be the best convertible car seat for you and your child due to its ClickTight installation system, SafeCell technology, and outstanding impact protection. With this seat, the installation process is fast and easy as buckling a seatbelt, courtesy of that ClickTight system. Its sturdy construction features a steel frame, a V-shaped tether, and an energy-absorbing base. In our evaluation, this Britax seat is truly designed with all its users in mind. It has a fourteen-position, easy-adjust harness that grows along with your baby, and it is possible to change the height of the seat with the quick push of a button.