This is a ‘rear-facing-for-longer’ model that can be used from birth as a rear-facing car seat and then rear or forward-facing for the Group 1 phase.
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Cybex Introduces Sirona S: First Convertible Car Seat with Load
Convertible Car Seat: The first car seat in the US to feature an innovative 360° rotatable seat, the Sirona S makes it quick and easy to switch
CYBEX Sirona S with SensorSafe, Convertible Car Seat, 360° Rotating Seat, Rear-Facing or Forward-Facing Car Seat, Easy Installation, SensorSafe Chest