Cybex Sirona M Sensorsafe 2.0 Convertible Car Seat


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The CYBEX Sirona M Convertible Car Seat has two modes - rear-facing from 5 lbs. to 40 lbs. and forward-facing from 22 lbs. to 65 lbs. This seat provides comfort and maximum safety with patented Side-impact Protection which can reduce side impact forces by up to 25%*, an energy absorbing shell and a 12-position height adjustable headrest with a no-rethread harness that offers protection that grows with your child.

Linear Side-Impact Protection (L.S.P.)

The L.S.P. System of the Sirona M and Sirona M with SensorSafe extends on the door facing side of the installed car seat and offers increased safety during a side-impact collision. The L.S.P. System reduces the forces of an impact in the event of a side-impact collision by approximately 25% when compared to the same car seat without L.S.P. extended..

12-Position Height Adjustable Headrest

The 12-position, height-adjustable headrest of the Sirona M and Sirona M with SensorSafe offers comfortable protection as your child grows. The integrated no-rethread harness adjusts with the headrest movement so there’s no need to reconfigure the harness as your child moves up in the seat.

Energy-Absorbing Shell

An energy absorbing shell helps reduce the forces felt by the baby in the event of a collision.

10-Position Reclining Backrest

One-hand recline for rear-facing and forward-facing installations.

Magnetic Buckle Holders

Magnetic buckle holders for easy entry and exit from the seat.

Removable Newborn Inlay

Removable newborn inlay provides additional support for smaller babies.

Innovative One-pull Latch Removal System

For easy installation and removal from the vehicle seat.

Removable Cup Holder

Removable cup holder can be positioned on either side and is dishwasher safe for easy clean up.


  • Adjustable Linear Side-impact Protection (L.S.P. System) absorbs up to 25% more impact forces in the event of a side impact*
  • Magnetic belt holders for easy entry and exit from the seat
  • Rear-facing installation from 5 lbs. to 40 lbs., or Forward Facing from 20 lbs. to 65 lbs.
  • 12-position, height-adjustable headrest with an integrated no-rethread harness for protection that grows with your child
  • 10 position one-hand adjustable recline for the best fit to your car
  • Cup holder can be positioned on either side and is dishwasher safe for easy clean up
  • Energy absorbing shell helps reduce the forces felt by the baby in a collision
  • Dual Belt adjusters to ensure a tight fit
  • Dual-level indicators to help ensure the proper angle
  • Innovative one-pull LATCH removal system
  • LATCH Connection storage provided in the seatback when not in use
  • Ergonomic design in CYBEX’s iconic Gold Design language
  • Designed and engineered in Germany

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


Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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