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Book a Baby Gear Consultation (click here) | Free Shipping $99+
Book a Baby Gear Consultation (click here) | Free Shipping $99+

Cybex Sirona S 360 Rotational Convertible Car Seat with SensorSafe

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Original price $549.95
Current price $439.96

List Price:$439.96


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Ships in 1 - 3 weeks


Cybex’s German-engineering finally reaches American shores. The fabled and much loved European version of the Sirona S has been tweaked in order to bring it to the US market. Packed with tons of features that are entirely unique on the US convertible car seat market, the Cybex Sirona S is poised to take the US car seat industry to a completely new level.


In the US there are currently no standards for stabilization of your car seat. In Canada they require an anti-rebound ar, and in Europe they require a load leg, both of which are still rar in the US. While there are some exceptions, neither of these features are particularly prevalent in the US convertible car Seat market. Cybex made the choice to include both of these features in the Sirona S. This serves to reduce upward and downward momentum by over 30%. The most frequent impacts we experience are forward and rear impacts, causing whiplash in the driver and passengers, so by reducing the momentum in those directions it keeps the seat and your child incredibly stable in the most common kinds of accidents.

The installation is also something to behold. Vehicle belt lock-offs have become the preferred method for installing convertible car seats in the US, and Cybex is no stranger to using lock offs. They were one of the first in the US to use a pressurized lock off for the Cybex Cloud Q, and this is no less impressive. You can see an example of their new lock-off installation in our Best Car Seats of 2020. While the middle seat is still the safest, Cybex also included their innovative L.S.P. system, which uses outer arms to stabilize the seat against either side door.




The most unique feature of this utterly incomparable car seat is the 360° Swivel on its base. This means you never need to worry about reinstalling your car seat. It is the only true one-and-done in the US. We suggest keeping kiddo rear-facing as long as possible, and this seat makes it easy to switch when you’re ready. Just push the button and spin! Working with parents for as long as we have, we know how important that is for getting kids in and out of the car as well, saving tons of effort and strain on your back over time.

A 12-position recline offers tons of comfort for kiddo, whether sightseeing or napping the car ride away. Magnetic Buckle Holders make it easy to get kiddo buckled up without tangling the belt underneath or around them. Cybex SensorSafe technology can hook up to your phone and let you know if kiddo was left in the car or if they’ve unclipped their harness.

Shipping Policy

  • In stock items are shipped via UPS Ground from our warehouse in Boston, MA within 1-2 business days after placed. Transit time is 1-5 business days once it has been shipped.

  • Items listed as shipped from manufacturer take an additional 1-2 business days for processing but most orders ship within 3 business days. You will receive tracking information as soon as we receive it from the manufacturer. Transit time is generally 1-5 business days once it has been shipped.

  • We offer free shipping on orders over $99 within the continental US.

  • Our full shipping policy, including transit times can be viewed here.


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