Cybex Sirona S 360 Rotational Convertible Car Seat with SensorSafe

Authorized Dealer

Color: Premium Black
Sale price$549.95

 SKU: 519004437


The CYBEX Sirona S is the only Convertible Car Seat in the U.S. to feature an innovative 360° rotatable seat with load leg stability, linear side impact protection, and SensorSafe™ technology.  The rotating feature makes it super easy to get your child in and out, and also convenient for switching between rear-facing and forward-facing positions. The load leg helps decrease rotation of the car seat while the side impact protection system absorbs impact forces in certain crashes. Built into the chest clip, SensorSafe provides app alerts when potential unsafe situations arise. These features 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.
  • EasyLockbar reduces force needed for quick, simple, and secure installation.
  • Smart-tech harness chest clip with SensorSafetechnology uses a Bluetooth enabled chest clip to send mobile app alerts to parents if their child becomes unbuckled, the car temp gets too warm, or unsafe situations 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 a 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.
  • 2 Year Warranty

*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.


Dimensions & Weight
  • 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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