The Cybex Sirona S is the only convertible car seat that protects your child and your back. The car seat rotates 360 degrees, allowing you to rotate the seat toward your car door while helping your child in and out.
The NEW CYBEX Sirona S is the first Convertible Car Seat in the U.S. to feature an innovative 360° rotatable seat with load leg technology, 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.
Smart-tech harness chest clip with SensorSafe technology provides alerts when unsafe situations arise including if a child unbuckles themselves while the vehicle is in motion; if the back seat has become too warm or too cold, if a child has been seated for too long, and if the driver accidentally leaves the child behind after the vehicle has been switched off. These alerts are provided through an installed vehicle receiver and a user-friendly smartphone SensorSafe App.
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. SensorSafe is compatible with most vehicles 2008 or newer with an OBD II port. For some electric vehicles, contact Cybex as an additional adapter may be needed. 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. 2-year limited manufacturer's warranty.
Car Seats and Travel Systems are FINAL SALE, no refund or exchange on this item.
The NEW CYBEX Sirona S is the first Convertible Car Seat in the U.S. to feature an innovative 360° rotatable seat with load leg technology, 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.
Smart-tech harness chest clip with SensorSafe technology provides alerts when unsafe situations arise including if a child unbuckles themselves while the vehicle is in motion; if the back seat has become too warm or too cold, if a child has been seated for too long, and if the driver accidentally leaves the child behind after the vehicle has been switched off. These alerts are provided through an installed vehicle receiver and a user-friendly smartphone SensorSafe App.
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. SensorSafe is compatible with most vehicles 2008 or newer with an OBD II port. For some electric vehicles, contact Cybex as an additional adapter may be needed. 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. 2-year limited manufacturer's warranty.
Car Seats and Travel Systems are FINAL SALE, no refund or exchange on this item.
Additional Information
- SKN: 270431
- ID: A4836A50
- UPC: 4063846028559
- MFR Number: 9004449
- Ship to Quebec: Yes
- In Store Only: No
- Language: Bilingual
Assembly
- Item Height: 33.70 inches
- Item Length: 21.10 inches
- Item Weight: 36.20 lbs
- Item Width: 20.10 inches
<!--begin-bvseo-reviews-->
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<div id="bvseo-reviewsSection">
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1179607807">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">5</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Mary L</span></span> from
<span itemprop="name">Sirona S Sensor</span>
<span itemprop="description">Absolutely love it !! So practical!!</span>
<div class="bvseo-pubdate">Date published: 2025-01-25</div>
<meta itemprop="datePublished" content="2025-01-25" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1178505518">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">3</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">bc789</span></span> from
<span itemprop="name">Great, but not compatible with our vehicles!</span>
<span itemprop="description">So my husband and I have liked Cybex [Our Cloud G and Gazelle have been amazing!] and think there's a lot of great things about the company in terms of quality and safety. In terms of comfort, there really is no empirical evidence suggesting this car seat(Sirona S w/ Sensor Safe) is uncomfortable to our little one so it's hard to express our opinions on comfort, our son seems to like it. That being said, the reason why this Sirona S gets 3 stars is because it simply does not work with in a 2010 Hyundai Elantra or a 2022 Nissan Rogue, at least my husband was not able to get the seat installed to our safety standards. We've watched all the install videos, read all the reviews, seen all the tips & trick vids, and still was not successful in a safe installation. My husband has tried installing via latches and seat belt tensioner and the base just wiggles around way too much for our liking. The ol' "base should not move more than 1in" clearance is just not obtainable hence we are returning. It did not install in the middle back seat or door seats to our liking.
It does however work in a 2016 Toyota Corolla, barely. In my husbands' words he says that he struggled to install via latch system but managed to get it to where the "1in" test is obtainable to the point where he felt it is safe, but "we'll see how the tension holds up over a period of time". He says that the "carseat is great and easy to get our son in and out of the seat. easy to swivel and it helps having a son who is enthusiastic about buckling himself in". Here is a list of the things he does NOT fancy:
1) obviously the incompatibility from vehicle to vehicle. It is not a universal one size fits all car seatbelt latches fit. though we managed to get it to work in 1 of 3 vehicles, it still was rather difficult.
2) once you manage to get the seat installed, the actual car seat is still pretty wobbly. the base is solid but the actual seat be wobbly. to us, it seems fine. but other parents might not like that
3) the magnets for the buckle tongues are in the wrong spot, and don't really help keep the buckles out the way
4) If you drive a sedan, we still find it still hard on our backs to insert and secure our child because sedans are just generally lower to the ground than Mid size or Full Size SUVs are. So you're still bending over, the swivel feature YES does make it easier but stress on your back is still present with every load in.
We are keeping the one installed in our Corolla but returning the other we bought for grandmas car (Nissan Rogue). If we were able to successfully get that second one into grandmas car safely, this carseat would have easily been a 5 star. Maybe my husband didn't do it right, but he did the research, he's pretty savvy and very capable, and worked at it for quite a while. But we hope this review helped and hopefully you found a way to make it work in your vehicle.</span>
<div class="bvseo-pubdate">Date published: 2025-01-07</div>
<meta itemprop="datePublished" content="2025-01-07" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1177709649">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">1</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">MariG</span></span> from
<span itemprop="name">Returned/ feel not secured</span>
<span itemprop="description">Very disappointed, extremely difficult to install and the baby is not secured, the car seat is all loose and can move easily.</span>
<div class="bvseo-pubdate">Date published: 2024-12-26</div>
<meta itemprop="datePublished" content="2024-12-26" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1176640720">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">5</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">TJW1</span></span> from
<span itemprop="name">Absolutely No Complaints!</span>
<span itemprop="description">We love the Cybex Sirona S! I’ve seen other reviews state that the car seat wobbles, but we don’t have that issue. As long as the foot base is taut and the load leg is installed correctly, you will be okay! The car seat is supposed to have wiggle at the top so the force of a car crash (God forbid) can distribute evenly.
The swivel feature is easy and works with one hand, the buckle magnets and no rethread harness are a game changer, and installation didn’t take nearly as long as everyone said.
5/5 from me!</span>
<div class="bvseo-pubdate">Date published: 2024-12-10</div>
<meta itemprop="datePublished" content="2024-12-10" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1174009292">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">5</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Lilly</span></span> from
<span itemprop="name">Don’t wait to buy this !</span>
<span itemprop="description">We absolutely LOVE the Sirona S w/ Sensor Safe. I wish we would have had this on our registry rather than the Nuna car seat. We have a BIG girl and she was already too heavy for us ( me specifically ) to carry in her Nuna carrier. By 4 months I was already looking for alternatives. This has been the best purchase yet.</span>
<div class="bvseo-pubdate">Date published: 2024-11-03</div>
<meta itemprop="datePublished" content="2024-11-03" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1172825228">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">1</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Berenice</span></span> from
<span itemprop="name">Eh</span>
<span itemprop="description">It moves quite a bit seems to always just be loose even when installed properly</span>
<div class="bvseo-pubdate">Date published: 2024-10-16</div>
<meta itemprop="datePublished" content="2024-10-16" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1172788591">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">2</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">YULIIA</span></span> from
<span itemprop="name">It doesn't fix well, I was not satisfied</span>
<span itemprop="description">It doesn't fix well, I was not satisfied</span>
<div class="bvseo-pubdate">Date published: 2024-10-16</div>
<meta itemprop="datePublished" content="2024-10-16" />
</div>
<div class="bvseo-review" itemprop="review" itemscope itemtype="https://schema.org/Review" data-reviewid="1172613185">
<span itemprop="reviewRating" itemscope itemtype="https://schema.org/Rating">
Rated <span itemprop="ratingValue">1</span> out of
<span itemprop="bestRating">5</span>
</span> by
<span itemprop="author" itemtype="https://schema.org/Person" itemscope><span itemprop="name">Sad about the car seat</span></span> from
<span itemprop="name">Wobbles like crazy,</span>
<span itemprop="description">Unsafe even if you stay an hour making it tight, it’s wobbly , I am frustrated and always feel like my baby is not safe in this car seat. I have another cyber car seat that doesn’t not rotate and it’s not like this, I got this in April and traveled out of the country and since I came back I have tried all ways to make it tight, but nothing worked. This car seat is not safe for my child or your child. Hoping cyber can resolve this because this was a pricy car seat.</span>
<div class="bvseo-pubdate">Date published: 2024-10-12</div>
<meta itemprop="datePublished" content="2024-10-12" />
</div>
</div>
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<li class="bvseo-paginationItem"><a class="bvseo-paginationLink" href="https://www.babiesrus.ca/en/Cybex-Sirona-S-360-convertible-car-seat-with-Sensor-Safe-Premium-Black/A4836A50.html?bvstate=pg:2/ct:r">Cybex Sirona S 360 convertible car seat with Sensor Safe Premium Black Reviews - page 2</a></li>
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<div class="bvseo-question-answer" data-questionid="5643274">
<h2 class="bvseo-question">
Quelle est la profondeur de ce si&egrave;ge en position face vers l'arri&egrave;re? J'aimerais savoir s'il peut entrer dans une voiture compacte
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: Mhasna16</div>
<div class="bvseo-answer" data-answerid="6183177">
The Sirona S in the most reclined position; rear facing is 30&quot; Le Sirona S dans la position la plus inclin&eacute;e ; face arri&egrave;re est de 30&quot;
<div class="bvseo-author">Answered by: CYBEX Customer Care</div>
<div class="bvseo-pubdate">Date published: 2023-05-18</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5555845">
<h2 class="bvseo-question">
Any owns Honda Civic? How does it fit?&nbsp;
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: Atifa</div>
<div class="bvseo-answer" data-answerid="6098867">
Because of the thousands of vehicle seats, belting types and safety seat combinations possible, there is no listing available to match a car seat with the type of vehicle in which it will best fit, however the dimensions of the seat which is: 24&quot;H x 19&quot;W x 30&quot;D.
<div class="bvseo-author">Answered by: CYBEX Customer Care</div>
<div class="bvseo-pubdate">Date published: 2024-03-28</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5503650">
<h2 class="bvseo-question">
What is the difference between the regular black seat and this exclusive premium black? Is the material better?
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: BabyBlueEyed</div>
<div class="bvseo-answer" data-answerid="6050767">
The material is the same, the only difference is the color.
<div class="bvseo-author">Answered by: CYBEX Customer Care</div>
<div class="bvseo-pubdate">Date published: 2021-11-22</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5495092">
<h2 class="bvseo-question">
Can this car seat fit 3 across ?
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: customer1234</div>
<div class="bvseo-answer" data-answerid="6041043">
Because of the thousands of vehicle seats, belting types and safety seat combinations possible, there is no listing available to match a car seat with the type of vehicle in which it will best fit, however the dimensions of the seat which is: 24&quot;H x 19&quot;W x 30&quot;D.
<div class="bvseo-author">Answered by: CYBEX Customer Care</div>
<div class="bvseo-pubdate">Date published: 2021-11-16</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5486656">
<h2 class="bvseo-question">
Which stroller is compatible with this car seat?
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: pjani</div>
<div class="bvseo-answer" data-answerid="6033526">
The Sirona S is not designed to attach to any strollers and is designed to stay installed in the vehicle.
<div class="bvseo-author">Answered by: CYBEX Customer Care</div>
<div class="bvseo-pubdate">Date published: 2021-11-19</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5954579">
<h2 class="bvseo-question">
What are the minimum and maximum weight limits? Does this come with tethers for rear and forward facing?
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: MamaBear13</div>
</div>
<div class="bvseo-question-answer" data-questionid="6104056">
<h2 class="bvseo-question">
how can you install it in the car that has no latch(isofix)? can it be installed with seatbelt, or can we purchase additional base?
</h2>
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<div class="bvseo-author">Asked by: yj b</div>
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SKN: 270431
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