Best Convertible Car Seat: Cybex Sirona M

If the Jetson's had a car seat, this high-tech newcomer would be it.
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Updated September 17, 2020
Cybex Sirona M
Image: Cybex
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SensorSafe technology debuted two years ago to help prevent infant hot car deaths; the latest iteration goes several steps further to thwart a variety of car seat accidents, misuse and safety concerns. The Cybex Sirona M is currently the only car seat on the market to incorporate the 2.0 technology, making it one of the safest (and most high-tech) options available to parents right now—but that’s hardly the only reason this seat impressed us.

What we love

  • The Sensorsafe 2.0 app not only alerts you if you’ve accidentally left your little one in the car—but also pings you if your child unbuckles themselves while the vehicle is in motion, the backseat temperature is too hot or cold, or your child has been sitting too long
  • One of the keys to car seat safety is a correct installation; with Sensorsafe, you can enter the make and model of your car and it will provide how-to videos and tips
  • With a 12-position headrest and a weight capacity up to 65 pounds, the Sirona M can function as your sole car seat for years


A car seat designed to be as safe, easy-to-use, and versatile as possible—what more could you want?

Buy it: $330


Clek Fllo

Nuna Rava

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