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CYBEX Sirona S 360 Rotational Convertible Car Seat

519004439 / MANHATTAN GREY


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




  • 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 up to 4x 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 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 seat
  • 12-position, height-adjustable headrest with 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.

*When compared to the same car seat without L.S.P. extended

Available in Manhattan Grey, Premium Black and Indigo Blue

Measurements: Forward-facing (Fully upright) 25.5 H x 20 W x 25.3 D Weight: 30.4 lbs. Use from Birth up to 65 lbs. or 49 inches, following the directions in your user manual


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