The 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.
- Innovative, one-hand 360° rotatable seat allows parents to easily get their child in and out.
- Load leg stabilizes the car seat and can reduce rotation in certain crashes by up to 30%.
- Only Convertible Car Seat in North America with a one-time vehicle belt installation for both rear-facing and forward-facing mode.
- EasyLock™bar reduces force needed for quick, simple, and secure installation.
- Smart-tech harness chest clip with SensorSafe™technology alerts parents if their child becomes unbuckled, the car temp gets too warm, or unsafe conditions arise.*
- 12-position recline adjustment even while the seat is in use.
- Linear Side-impact Protection absorbs up to 25% more impact in a collision (when compared to the same car seat without L.S.P. extended).
- 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 the seat.
- 12-position, height-adjustable headrest with a no-rethread harness.
- Dual-level indicators help ensure the proper car seat angle.
- Steel reinforced frame provides strength and durability.
- Harness pads and 3-position padded buckle provide extra comfort.
- Removable newborn insert provides support for small babies.
- Innovative one-pull LATCH removal system.
- LATCH Connection storage inside the base when not in use.
- Rear-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.
30” D x 19” W x 24” H
- 30.4 lbs.
- Use from birth up to 65 lbs. or 49 inches, following the directions in your user manual
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