Cybex Gold Eternis S Sensor Safe All-In-One Car SeatThe CYBEX Eternis S with SensorSafe is the only seat your child will need from birth and beyond. With three modes rear facing, forward facing, and booster, this All In One Convertible Car Seat is designed for use from birth up to 120 lbs. The Eternis S with SensorSafe features Linear Side impact Protection, and a patented 3 position reclining headrest that guides the childs head and neck into a proper position while they are asleep. With SensorSafe