The NEW CYBEX Sirona S is the first Convertible Car Seat in the U.S. to feature an innovative 360° rotatable seat with a load leg, making switching between rear-facing and forward-facing positions quick and easy. The Sirona S load leg stabilizes the seat and can significantly reduce crash forces. These features, combined with an EasyLock bar for quick, simple and secure installation, offer advanced safety protection for children — and greater peace of mind for parents. Additional Features: 12-position recline adjustment even while seat is in use Linear Side-impact Protection absorbs up to 25% more impact in a collision** Anti-rebound design reduces car seat rebound movement Magnetic buckle holders make entry and exit from the seat a breeze Dishwasher safe cup holder can be positioned on either side of seat12-position, height-adjustable headrest with no-rethread harnessDual-level indicators help ensure the proper car seat angleSteel reinforced frame provides strength and durabilityHarness pads and 3-position padded buckle provide extra comfortRemovable newborn insert provides support for small babiesInnovative one-pull LATCH removal systemLATCH Connection storage inside the base when not in useRear-facing from 4 lbs. to 50 lbs. Forward-facing from 22 lbs. to 65 lbs. *SensorSafe is compatible with most vehicles 2008 or newer with an OBD II port. For some electric vehicles, contact CYPBEX as an additional adapter may be needed. **when compared to the same car seat without L.S.P. extended