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Description
cybex sirona s vs m CYBEX Sirona S Convertible Car Seat | Infant SeatThe Cybex Sirona S 360 is the ONLY convertible car seat to feature a 360 rotatable seat with load leg stability, linear side impact protection, and SensorSafe technology. This Sirona S 360 rotating convertible car seat is the first model to include an innovative 360 rotatable seat with load leg technology, making switching between rear facing and forward facing positions quick and easy. The Sirona S car seat's load leg stabilizes the seat and can
The Cybex Sirona S 360 is the ONLY convertible car seat to feature a 360-rotatable seat with load leg stability, linear side impact protection, and SensorSafe technology.
This Sirona S 360 rotating convertible car seat is the first model to include an innovative 360° rotatable seat with load leg technology, making switching between rear-facing and forward-facing positions quick and easy.
The Sirona S car seat'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.
SensorSafe™
The smart-tech harness chest clip with SensorSafe™ technology makes the Sirona S SensorSafe convertible seat even safer, providing 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, or 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 the user-friendly smartphone SensorSafe App.
Product Features :
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An innovative, one-hand 360° rotatable seat allows parents to easily get their child in and out — a signature feature of the Cybex Sirona S 360
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The load leg stabilizes the car seat and can reduce rotation in certain crashes by up to 30%
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The only convertible car seat in North America with a one-time vehicle belt installation for both rear-facing and forward-facing modes
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EasyLock bar reduces the force needed up to 4x for quick, simple, and secure installation
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A 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
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12-position recline adjustment, even while the seat is in use
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Linear Side-impact Protection absorbs up to 25% more impact in a collision, making the Cybex Sirona S 360 one of the safest convertible car seats
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An anti-rebound design reduces car seat rebound movement
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Magnetic buckle holders make entry and exit from the seat a breeze
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A dishwasher-safe cup holder can be positioned on either side of the seat
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12-position, height-adjustable headrest with no-rethread harness
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Dual-level indicators help ensure the proper car seat angle
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A steel-reinforced frame provides strength and durability
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Harness pads and a 3-position padded buckle provide extra comfort
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Removable newborn insert provides support for small babies
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Innovative one-pull LATCH removal system
- LATCH Connection storage inside the base when not in use
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Rear-facing from 4 lbs. to 50 lbs. Forward-facing from 22 lbs. to 65 lbs. — making the Cybex Sirona S 360 a safe choice as your child grows (when compared to the same car seat without L.S.P. extended)
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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
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Measurements of the Sirona S 360 rotating convertible car seat: 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
Product Details :
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Group: Convertible Car Seat
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Height: max. 49 in
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Weight: From 4 lbs. up to 65 lbs.
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Age: From newborn to approx. 4 years
- 2-year limited manufacturer's warranty
- Care: Fabrics machine washable cold, delicate cycle, with a mild detergent.
Functions :
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SensorSafe™ Technology
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12-Position Recline
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Linear Side Impact Protection (L.S.P.)
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Anti-Rebound Design
- Magnetic Buckle Holders
Upgrade to the Cybex Sirona S 360 today and experience the Sirona S car seat advantage for unmatched safety and convenience! Order now at Kido Bébé!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Unbelievable!!!
Color: White, Number of Items: 1, Color: White, Number of Items: 1
First off, let me say wow! When I received this, I didn’t expect much because of the price, but I am blown away with the care that was given in the packaging alone, the simplicity of putting it together with the detailed yet brief instruction page, and the ability to put this together with one person. Took me less than 40mins. Highly recommend!!! And in fact, I’m purchasing another one right now as I’m sitting here rocking in my new beautiful chair.
UPDATE: a lot of negative reviews are basically user error. To attach the wheels, to snap on, I used a rubber (not metal) mallet to tap them in. To the leveling review, you have one arm on backwards. To the screw passing through, you may be correct but double check you didn’t use the required screws elsewhere. And the person saying it doesn’t recline, you have to release the lock - pull the up and down lever out and away from the seat. Good luck all!
Bought a second one - same thoughts as above. Pretty awesome chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2025
★★★★★ 3
Great aesthetic and easy assembly, but lacking in all-day comfort
Color: Orange, Number of Items: 1
Pros:
Simple Assembly: It took less than 45 minutes to build. The instructions are straightforward, and all necessary tools are included. Getting the armrests aligned takes a bit of finagling, but it's manageable.
Appearance & Shipping: It arrived well-packaged with no damage. It has a sleek, modern look that adds a great aesthetic to an office space, and the height adjustment works perfectly.
Cons:
Lack of Support: The comfort level falls short. At 5'11", I found the back offers no lumbar support, and the backrest isn't tall enough to serve as a headrest.
Disappointing Armrests: The armrests are mostly metal with a thin, flimsy layer of faux leather. If you live in a colder climate or a poorly insulated home, the metal frames get quite cold to the touch.
Limited Padding: The seat cushion is minimal. After about 3 hours of sitting, it starts to feel very firm and uncomfortable.
Verdict:
You ultimately get what you pay for. I would not recommend this as a primary desk chair for an 8-hour workday. However, it is an affordable, sharp-looking option if you just need a decorative accent piece, a guest chair, or budget-friendly seating for a conference room.
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Recommend. Great for Home office
Color: White, Number of Items: 1, Color: White, Number of Items: 1
I am very pleased with this chair. I’m working on building my home office and it’s important to me and have a look that is comforting and clean looking the chair was easy to put together. Didn’t take very long at all. It’s sturdy. It rises up and down to fit your height and it’s comfortable. It was a great purchase. I’m glad I got it.
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Reviewed in the United States on January 28, 2026
★★★★★ 1
Seller Stall Tactics
Color: White, Number of Items: 1, Color: White, Number of Items: 1
My chair arrived last Wednesday, but I only assembled it today. It looks overwhelming as you take all of the pieces out of the box, but it is straightforward to assemble. Took me less than 45 minutes start to finish. Assembled, the chair is really nice. Many reviews talk about the incessant squeaking. I'm guessing it has to do with how they assembled the chair. Mine does not make a sound. The seat is very firm, it may be uncomfortable for some people; I'll have a better idea after I use it for awhile. I gave it 4 stars because the plastic lever to raise/lower the chair, the underside broke off in 3 pieces! Fortunately I was able to fit the pieces back, and used liquid Gorilla Glue all over the broken seams. So far it's holding up well. Visually the chair is beautiful.
UPDATED 6/1/20 - I originally gave this chair 4 stars. As you can see in my original post, I took one star off for a crucial piece that was broken inside the box. I read reviews where customers who experienced issues were not getting assistance from the seller. I am now in that same issue. After I initially e-mailed the seller regarding a replacement part for that one piece, they are repeatedly e-mailing me asking me is this part broken, is that part also broken. My last e-mail to them stated that I have explained the issue in detail multiple times and if I am sent one more e-mail asking if another part is broken, I will know this is a stall tactic. I have an e-mail this morning asking if the gas lift is broken. I've contacted Amazon to contact the seller with the understanding that if they stall Amazon as well, a request will be made for a full refund. I am NOT the one to play with when it comes to shady customer service. If I could give negative stars based on the seller alone, I would.
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Reviewed in the United States on May 27, 2020
★★★★★ 5
Well made value chair
Color: Black, Color: Black
Great value and well constructed. Easy to assemble. It’s very light and maneuverable. It’s reasonably comfortable for occasional use although I would prefer something with more support if I were using this every day. For my needs, however, it’s perfect. Adjustments are easy – especially height, changing from tilting to rigid. I also appreciate the swing up arms, which was a feature that I particularly liked with this chair.
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Reviewed in the United States on March 19, 2026
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