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{ "prodId": "5422589", "siteId": "BuyBuyBaby", "initOrigin": "https://www.buybuybaby.com" }
Cybex

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Free Shipping on Orders Over $39

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.

View Full Product Details Buying Guide
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
CYBEX Sirona S 360 Rotational Convertible Car Seat with SensorSafe in Indigo Blue. View a larger version of this product image.
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Cybex
Write Review
Free Shipping on Orders Over $39

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.

View Full Product Details Buying Guide
Free Shipping on Orders Over $39

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.

View Full Product Details Buying Guide
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This item is not sold in stores and is not available for same day delivery.
Standard Shipping to 60601 60601
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details

about the product

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
  • Features:
    • 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
  • Made in China
  • skuId: 69176494

features

Number of Recline Positions
12
Number of Head Rest Positions
12
Child Safety Alert Details
SensorSafe with app
Car Seat Installation Type
LATCH system, Belt lock-off
Car Seat Harness Features
Belt tensioning, Easy in/out harness, No-rethread harness, One-pull harness tightening/loosening
Car Seat Features
Easy to remove fabrics, Level indicator, One-hand adjustable handle, Removable infant insert included, Safety alerts, Side impact protection
Car Seat Comfort Features
Adjustable head support, Adjustable recline, Cup holder, Strap covers included
TSA Approved
Y
Warranty
2 year limited warranty

specifications

Color
BLACK, INDIGO BLUE, GREY, BLACK/GREY
Product Depth in
30, 27.5
Product Width in
19
Product Height in
24, 20
Rear Facing Maximum Weight Capacity lb
50
Rear Facing Minimum Weight Capacity lb
4
Rear Facing Maximum Height Capacity in
49
Forward Facing Maximum Height Capacity in
49
Forward Facing Minimum Height Capacity in
28
Forward Facing Maximum Weight Capacity lb
65
Forward Facing Minimum Weight Capacity lb
22
Part or Model Number
519004435, 519004441, 519004439, 519004437

Innovative, One-Hand 360° Rotatable Seat

Getting your child in and out of the car is now easier than ever!

A Stable Seat

The load leg stabilizes the car seat, and antirebound design reduces car seat rebound movement.

12-Position Recline

The seat can even be adjusted while in use, keeping your little passenger comfy for the journey ahead.

EasyLock™ Bar For Simple, Secure Installation

Plus one-time vehicle belt installation for both rear-facing and forward-facing modes.

Always Know Your Little One Is Safe

SensorSafe™ technology in the smart-tech harness provides alerts when unsafe situations arise in the car.

Linear Side-Impact Protection

Absorbs up to 25% more impact forces in a collision (when compared to the same car seat without L.S.P. extended).

shipping & returns

Please be aware we've temporarily extended our delivery time frames due to Covid 19 precautions at our facilities. The extended time frames will be reflected in the estimated delivery date shown at checkout.

Free Standard Shipping on Orders Over $39

Free Standard Shipping with any online purchase of $39 (merchandise subtotal excludes store pick up items; merchandise subtotal is calculated before sales tax, before gift wrap charges, and after any discounts or coupons). Truck delivery and shipping surcharges on over-sized or extremely heavy items will still apply (these charges are indicated on the appropriate product information pages and will be displayed in the shipping subtotal of your order). Orders typically arrive within 3-6 business days. Items shipped directly from the vendor or to Alaska and Hawaii have longer delivery lead times. This offer does not apply to Alaska, Hawaii, Puerto Rico or Business Direct orders.

See Full Shipping & Returns Policy

price match promise

We will match prices from our local retail competitors (including their online prices) and from major online retailers (Prices are not matched for marketplace sellers). buybuy BABY will follow any limitations and exclusions set by the competitor. See Details

Ratings & Reviews

Ratings Snapshot

3.8812785388127855
214 reviews ·

Would Recommend

90 recommendations

5
126
4
29
3
16
2
8
1
40

Quality

Value

Features

Ease of Use

Style

Write A Review
Most Helpful Positive Review
BEST CARSEAT! We were in a bad accident!
·
Recommended Not Recommended

We bought this car seat once our baby grew out of her infant seat. We loved it's capability to turn to load her in easily. On a drive on a highway in-between LA & Vegas, we were hit from behind by a kid going 120mph. We slammed into the guard rail, and slid for over a football field. Once we stopped, I began screaming about my baby, and ripped the door open. My baby let out one cry, & SHE WAS PERFECTLY SAFE. The car seat is in perfect condition. This car seat kept my baby safe, in an accident that totaled our car. Just Buy It! It's worth the money. I've never been so relieved that she was in such. safe carseat. I am logging on today, to order the EXACT same car seat to keep my baby safe.


Ease of Use

5

Style

Most Helpful Critical Review
Unfortunately incompatible with my VW Atlas
Caryl ·
Recommended Not Recommended

I was excited about this seat, but couldn’t get a stable install. I set up a video consult with Cybex (which I should have done sooner bc they were EXTREMELY helpful-they even got an engineer to try to help). Ultimately, it’s not compatible with my Atlas.

Ease of Use

5

Style

Customer Reviews

Showing 8 out of 214 reviews

Filter

Sort

Wanted to love it
Jennifer Lewis ·
Recommended Not Recommended

I wanted to love it. It is very high quality materials, very easy to buckle him in. The swivel feature is great. It’s a hard install and very heavy, the car seat is not stable, load leg is terrible doesn’t add any extra support. I checked to make sure my car was compatible prior to purchasing. I can’t return it.


Not safe, serious design flaw
suzanna ·
Recommended Not Recommended

The harness clip is dangerous. It has come undone several times on my almost 2 year old. I always check to hear the click and then pull it to make sure it is locked. It has come undone with her just arching her back, it has come undone after she has given her soft stuffed owl a hug, it has come undone with her putting her hand on the clip, over the button, but not actively attempting to push the button. This is a $550 carseat supposedly designed for safety of babies and toddlers. Even if my toddler was actively attempting to push the button, it should not release so easily. As a test, I locked the clip, ensured it was secure, placed my hand behind it to create some tension and ran my finger lightly over it. Popped right open. Refuse to let her ride in this seat anymore. Would not trust it to stay locked in an accident. I truly believe it may only be a matter of time before this item is recalled because a child is injured or killed. I sure hope I am wrong though.


Can not recommend for a Subaru Outback
Alyse ·
Recommended Not Recommended

This car seat was installed correctly in the driver-side back seat of our Subaru Outback. We quadruple checked against manual instructions and the Cybex company video for installation. I attempted multiple times to contact their "parent support" phone number (877-242-5676), and was greeted with an automated message saying they are experiencing "technical difficulties" and they "must ask that you contact us later". It is true that the seat does not budge along the belt path, but the amount of movement over the rest of the seat is insane! The load leg seems to be useless feature, simply taking up floor space, but giving absolutely no stabilizing help. Another issue is that the crotch buckle is too low and the plastic around it is to wide - it sits between my (50% percentile sized) toddler's thighs and digs in. I haven't had this issue yet, but do agree that the chest latch seems incredibly easy for a kid to figure out how to undo. I do find the swivel feature to work well and be so convenient. The materials are certainly high end, and aside from the crotch buckle it seems to be a very comfortable seat for my girl. I also love the ability to recline it. So many plusses, but the insane wobble that you can actually see as you drive in normal conditions - negates them all. I will be returning the Cybex Sirona S 360 and going back to our no-frills Graco.


Installation
Tone ·
Recommended Not Recommended

Sometimes it's hard to turn the carseat to put our daughter in it.


4

Quality


Bar None
ELIS ·
Recommended Not Recommended

No other car seat compares. Purchased 2 Sirona S seats. Could not be more satisfied.


5

Quality


Back saving innovation!!!!
MJHA ·
Recommended Not Recommended

My third pregnancy killed my back. We purchased the Sirona S because of the awesome swivel feature. It is worth its weight in gold. My son is a chunky monkey and loading him in and out of the seat is so easy. I wish this product was out when my first two were little. He thinks spinning is a lot of fun too. We also love the SensorSafe clip as I often use it to make sure all is ok temp wise in the car.


5

Quality


Love it!
Kendra V ·
Recommended Not Recommended

Just bought this car seat today and I absolutely love it! I wish I had this with my other babies!


Response
|

We are so happy that you love your product! cybex

DO NOT RECOMMEND VERY UNSTABLE
Jennifer N. ·
Recommended Not Recommended

I was wondering if I was the only person having this problem but turns out there’s plenty of people with the same issue. Car seat is very unstable and Buybiy baby won’t return it, I contacted cybex because it hasn’t even been a year since I bought it and Chris isn’t very helpful. I took pictures and videos of how unstable it is and I sent it in he said “it’s probably the angle of the picture” then he tried to blame it on the load leg when it states on their manual if you can’t meet all the installation requirements for it that you can store the load leg. I’ve been communicating with cybex back and Forth and they are no help. I don’t feel safe driving with my kid in it. If someone could reach out to me from anywhere so I can get a replacement that would be great !


Response
|

Please reach out to CYBEX Parentlink at 877-242-5676 I. A representative will want to hear about the issue that you are describing. cybex

Customer Reviews

214 reviews · ratings

Filter

Sort

Wanted to love it
Jennifer Lewis ·
Recommended Not Recommended

I wanted to love it. It is very high quality materials, very easy to buckle him in. The swivel feature is great. It’s a hard install and very heavy, the car seat is not stable, load leg is terrible doesn’t add any extra support. I checked to make sure my car was compatible prior to purchasing. I can’t return it.


Not safe, serious design flaw
suzanna ·
Recommended Not Recommended

The harness clip is dangerous. It has come undone several times on my almost 2 year old. I always check to hear the click and then pull it to make sure it is locked. It has come undone with her just arching her back, it has come undone after she has given her soft stuffed owl a hug, it has come undone with her putting her hand on the clip, over the button, but not actively attempting to push the button. This is a $550 carseat supposedly designed for safety of babies and toddlers. Even if my toddler was actively attempting to push the button, it should not release so easily. As a test, I locked the clip, ensured it was secure, placed my hand behind it to create some tension and ran my finger lightly over it. Popped right open. Refuse to let her ride in this seat anymore. Would not trust it to stay locked in an accident. I truly believe it may only be a matter of time before this item is recalled because a child is injured or killed. I sure hope I am wrong though.


Can not recommend for a Subaru Outback
Alyse ·
Recommended Not Recommended

This car seat was installed correctly in the driver-side back seat of our Subaru Outback. We quadruple checked against manual instructions and the Cybex company video for installation. I attempted multiple times to contact their "parent support" phone number (877-242-5676), and was greeted with an automated message saying they are experiencing "technical difficulties" and they "must ask that you contact us later". It is true that the seat does not budge along the belt path, but the amount of movement over the rest of the seat is insane! The load leg seems to be useless feature, simply taking up floor space, but giving absolutely no stabilizing help. Another issue is that the crotch buckle is too low and the plastic around it is to wide - it sits between my (50% percentile sized) toddler's thighs and digs in. I haven't had this issue yet, but do agree that the chest latch seems incredibly easy for a kid to figure out how to undo. I do find the swivel feature to work well and be so convenient. The materials are certainly high end, and aside from the crotch buckle it seems to be a very comfortable seat for my girl. I also love the ability to recline it. So many plusses, but the insane wobble that you can actually see as you drive in normal conditions - negates them all. I will be returning the Cybex Sirona S 360 and going back to our no-frills Graco.


Installation
Tone ·
Recommended Not Recommended

Sometimes it's hard to turn the carseat to put our daughter in it.


4

Quality


Bar None
ELIS ·
Recommended Not Recommended

No other car seat compares. Purchased 2 Sirona S seats. Could not be more satisfied.


5

Quality


Back saving innovation!!!!
MJHA ·
Recommended Not Recommended

My third pregnancy killed my back. We purchased the Sirona S because of the awesome swivel feature. It is worth its weight in gold. My son is a chunky monkey and loading him in and out of the seat is so easy. I wish this product was out when my first two were little. He thinks spinning is a lot of fun too. We also love the SensorSafe clip as I often use it to make sure all is ok temp wise in the car.


5

Quality


Love it!
Kendra V ·
Recommended Not Recommended

Just bought this car seat today and I absolutely love it! I wish I had this with my other babies!


Response
|

We are so happy that you love your product! cybex

DO NOT RECOMMEND VERY UNSTABLE
Jennifer N. ·
Recommended Not Recommended

I was wondering if I was the only person having this problem but turns out there’s plenty of people with the same issue. Car seat is very unstable and Buybiy baby won’t return it, I contacted cybex because it hasn’t even been a year since I bought it and Chris isn’t very helpful. I took pictures and videos of how unstable it is and I sent it in he said “it’s probably the angle of the picture” then he tried to blame it on the load leg when it states on their manual if you can’t meet all the installation requirements for it that you can store the load leg. I’ve been communicating with cybex back and Forth and they are no help. I don’t feel safe driving with my kid in it. If someone could reach out to me from anywhere so I can get a replacement that would be great !


Response
|

Please reach out to CYBEX Parentlink at 877-242-5676 I. A representative will want to hear about the issue that you are describing. cybex

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