SKU: 21075916756
cybex i size sirona m2

cybex i size sirona m2 CYBEX Sirona M SensorSafe 2.0 Convertible Car Seat

$21.28 $23.64
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Description

cybex i size sirona m2 CYBEX Sirona M SensorSafe 2.0 Convertible Car SeatDiscover advanced child safety and parental peace of mind with the Cybex Sirona M SensorSafe 2. 0 Convertible Car Seat. As part of the CYBEX Gold Car Seat line, this versatile seat combines ease of use with cutting edge safety features, designed to protect your child from their first ride and through every stage. The standout SensorSafe technology, embedded directly in the chest clip, instantly alerts caregivers of potentially unsafe situations,

Discover advanced child safety and parental peace of mind with the Cybex Sirona M SensorSafe 2.0 Convertible Car Seat. As part of the CYBEX Gold Car Seat line, this versatile seat combines ease of use with cutting-edge safety features, designed to protect your child from their first ride and through every stage. The standout SensorSafe technology, embedded directly in the chest clip, instantly alerts caregivers of potentially unsafe situations, offering crucial awareness while on the road.

Engineered for versatility, the Cybex Sirona M SensorSafe 2.0 can be used rear-facing for infants and toddlers up to 40 lbs. and forward-facing up to 65 lbs. Its adjustable Linear Side-Impact Protection (L.S.P.) System, designed to absorb side-impact forces, along with a 12-position headrest, grows with your child to provide tailored protection and comfort. The ergonomic design and one-pull LATCH removal system make installation easy, while features like magnetic belt holders and a recline function ensure a smooth, hassle-free experience for parents.

What Is SensorSafe?

The SensorSafe 2.0 chest clip monitors your child’s well-being, sending timely alerts directly to the caregiver’s smartphone if unsafe conditions arise. Originally developed to reduce incidents of children left unattended in vehicles, SensorSafe notifies caregivers if the car is switched off with a child still buckled, if the child unbuckles themselves mid-drive, if the back seat temperature reaches an uncomfortable level, or if a break is needed due to extended seating time. The alert system extends to emergency contacts with GPS coordinates if necessary, ensuring a continuous line of protection.

Cybex Sirona M SensorSafe 2.0 Convertible Car Seat Features

  • 5-Point Safety Harness with SensorSafe 2.0 Technology integrated into the chest clip
  • Adjustable Linear Side-Impact Protection (L.S.P.) System reduces side-impact forces by up to 25%
  • 12-Position, Height-Adjustable Headrest with integrated no-rethread harness for easy, precise adjustments
  • 10-Position Recline for a tailored fit to your car’s back seat
  • Dual-level Indicators and Magnetic Belt Holders for convenient, correct installation every time
  • Removable Newborn Insert for optimal support from 5 lbs. up to 11 lbs.
  • One-Pull LATCH Removal System for effortless disconnection when needed
  • Dishwasher-Safe Cup Holder that attaches on either side of the seat for easy access
  • Dual Belt Adjusters to secure a tight, safe fit every time

Cybex Sirona M SensorSafe 2.0 Convertible Car Seat Weight and Height Limits: How Long Can You Use Cybex Sirona?

The Sirona M SensorSafe 2.0 can be used for extended rear-facing from 5-40 lbs., and as a forward-facing car seat from 22-65 lbs., providing safety and comfort through every stage of your child’s growth.

Cybex Sirona M SensorSafe 2.0 Convertible Car Seat Manual and Instructions for Installation

Installing the Sirona M SensorSafe 2.0 is easy, with options for either the LATCH system or vehicle seatbelt. The one-pull LATCH removal and dual belt adjusters make it straightforward to achieve a secure fit, and the SensorSafe app provides guidance, FAQs, and instructional videos to support safe use every step of the way.

Cybex Sirona M SensorSafe 2.0 Convertible Car Seat Reviews: What Parents Are Saying

Parents consistently praise the Sirona M SensorSafe 2.0 for its innovative safety technology, ease of use, and comfort. The SensorSafe feature offers immense reassurance, allowing caregivers to focus on driving while knowing they’ll be alerted if any issues arise in the back seat. Many reviewers find the adjustable L.S.P. system and headrest beneficial, noting how these features adapt to growing children and provide increased security in side-impact scenarios. Parents also appreciate the hassle-free installation, magnetic belt holders, and the thoughtful design details that make buckling up smooth and fast.

In addition, the 10-position recline and cozy seat padding have received positive feedback, with many parents noting how comfortable their child is on both short rides and long road trips. Overall, the Sirona M SensorSafe 2.0 has become a top choice among safety-conscious caregivers looking for a reliable, high-quality convertible car seat.

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SKU: 21075916756

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4.3 ★★★★★
Based on 21 reviews
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K
Verified Purchase
Kimberly Schiller
New York, US
★★★★★ 5
Found a great chair
Color: Onyx Black
I'm really glad I looked around as long as I did, because this chair has been fantastic. It went together easily, all the ways it adjusts work great and are easy to figure out (even the back-tilt-lock thingy), and it's really comfortable even after a whole day in it. I am on the larger side, and haven't had a single creak out of the thing. It's very sturdy. The mesh of the seat and back are great here in the desert as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
V
Verified Purchase
Vincent S
Louisville, US
★★★★★ 5
Has good height and back support
Color: Onyx Black
I am very happy with the chair. I did replace the wheels with new casters. Didn't even try the originals though they look sturdy because they appear to be wider than others that I have seen. The arms are a little fiddley and can move when you don't necessarily want them to. What more than makes up for those minor issues is the fact that it easily fits my long legs and has great back support. It is mesh so warmth is not an issue. I think the mesh helps with the comfort rather than being sunk into a pillow. As a bonus, there is a leg rest. I can get comfortable enough to take a nap or can watch a movie while reclined. It feels very sturdy while in that position. I weigh about 205. Happy with the chair and I would recommend it for those who have a need. Great value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
M
Verified Purchase
Mia
New York, US
★★★★★ 5
Very sturdy and comfortable for the price.
Color: Onyx Black
The chair is easy to put together and very comfortable. I like that you can adjust how easy it reclines back, and absolutely love the reclined position with the foot rest up. Kinda feels like zero gravity. The foot rest is best when you’re in a reclined position. If you have it up while in an upright position, it’s a little awkward because it’s not much lift. Only thing I don’t like is that when it’s tucked under the seat, it takes up space (in case you like to fold your ankles under the seat - it will be in the way). Seat is wide and comfortable short term. I needed to get a cushion as I sit on it for 12 hours a day and was getting sciatica after a while. Rolls really smoothly. A lot of chairs don’t move as smooth because of their bulkiness, but this one is really smoothly. Very sturdy and well made for the price. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
M
Verified Purchase
MJ Armwood
Cuba, US
★★★★★ 5
Love my chair!!!
Color: Onyx Black
Love my chair! I’m a student with rheumatoid arthritis and this has made studying much more comfortable. It has great back support, is really sturdy, and easy to use, I don’t feel like I’m going to fall when I tilt it back and use the footrest. It looks good too. It fits in well with my renovated warehouse apartment. Awesome value for the money. I bought mine on sale and it is worth every penny. Thanks!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
J
Verified Purchase
Jesse Langner
Whiting, US
★★★★★ 5
My first time…and I like it.
Chairs can be tough to buy new without trying them out in person. You have no idea how it will feel, adjust, or breathe as you sit into it. The only way to know if what you’re getting is good or not is by taking a strangers word on the internet that it’s good. That being said, I’m very happy I listened to the strangers on this one. Coming from exclusively leather, cushiony chairs my whole life, I had no idea what to expect out of its mesh cousin. I was looking for something comfortable like a leather seat with the added breathability that mesh provides. This chair hits all marks. It’s comfortable, it breathes, is fully adjustable and comes with easy to read instructions backed up by the best customer service I’ve ever received online in my last 20 years on the web. The curves and contours of the chair fit my 5’10” 250 lb. frame nicely. The pneumatic adjustment is firm and cooperates well with any adjustments you might need. The upright position makes me feel like I slouch too much (which I probably do) and the lowest position almost makes me fall asleep (which I probably need). The casters glide as if on ice (after an upgrade, more on that later) and have no trouble changing course. The wheels might actually slide too well as now I have to plant my feet to stop myself on my wood floors. There is a “not included but provided upon request” lumbar pillow. The cushion is high quality but my back didn’t take to it very well. Not a knock on the chair, just my bad back. All in all, 5/5 so far. All of Assembly is easy if you’ve ever put together any office chair ever. It’s the same. No surprises there. Steel construction with steel screws and a provided Allen wrench for the initial build. I would suggest using a battery powered drill at low speed for the screws. Having a power tool makes the job much quicker but isn’t necessary. All of the pieces are clean and free of any machining burrs. Again, 5/5. Now we get to the customer service. The entire reason I decided to go with this chair was based on feedback provided by past customers. And I’m sure glad I listened. The lumbar pillow I spoke about only took a short email to acquire. Their friendly, helpful, and well spoken customer service agents are quick to reply and are always asking for feedback. I also mentioned earlier in the review that my casters were now good. That does mean the ones that it includes were not up to the standard of the rest of the chair for my weight. That being said, my wife, who is much smaller than I am, had no issues scooting around on the included wheels. Anyway, the company ended up sending me a replacement set of high quality nylon casters at no charge that tied up this experience in a nice little bow. The company did request the old wheels and base the be returned but the prepaid shipping label was provided. The option to have them arrange pickup of said items was also available. 5/5 with ease. So there it is. My first review ever. I would be doing the manufacturer a disservice by not detailing the entire experience from exceptional construction to customer service rivaled by none. If you’re looking to give mesh chairs a shot, don’t be afraid. You will not regret it. (I know this review was all positive. It was not sponsored. Unless you count the upgrades, but anyone can get those.)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2023

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