Cybex Sirona Gi i-Size Plus Car Seat - Stone Grey
Price in the last 30 days: 329,95€
Goes well with
The Sirona Gi i-Size is a state-of-the-art car seat from the Cybex Gold range, designed to offer maximum automotive safety, comfort, and practicality for everyday use. With 360° rotation, an advanced side protection system, and compliance with the i-Size (UN R129) standard, this car seat stands out as a premium choice for demanding parents.
In this description, we explore all the features, advantages, and specifications of the Cybex Sirona Gi i-Size car seat, focusing on important details.
ADAC Awards and International RecognitionThe Sirona Gi i-Size is part of the renowned Cybex Gold line, synonymous with German quality (engineered in Germany) and constant innovation. This model has been distinguished with ADAC awards and positive evaluations from Stiftung Warentest — two of the most stringent European child safety testing organizations.
✔ Tests based on demanding criteria (including ADAC 2022)
✔ High levels of protection in frontal and side impacts
✔ Up to 50% safer in rear-facing position
These recognitions reinforce confidence in this car seat as a top solution in child road safety.
Advanced Safety in the Cybex Sirona Gi i-Size Car Seat Rear-facing up to 20 kgThe rear-facing position is crucial to reduce the forces exerted on the child's neck in the event of a frontal collision.
- Mandatory until 15 months (76 cm)
- Extended use up to 20 kg
- Significant risk reduction in frontal impact
- Ideal up to approximately 4 years
This configuration keeps the child protected during one of the most critical developmental stages, being 5 times safer.
Linear Side-impact Protection (L.S.P.)The integrated Linear Side-impact Protection (L.S.P.) offers an additional layer of safety in the event of a side impact.
- Effective absorption of impact energy
- Protection of the head, shoulders, and torso
- Reinforced structure with progressive absorption
An essential element to enhance side protection and minimize risks.
360° Rotation: Total Practicality for Everyday UseThe 360° rotation feature completely transforms the user experience.
- Allows the seat to be turned towards the door
- Facilitates the child's entry and exit
- Reduces strain on parents' backs
- Simple switching between positions
The rotating car seat is ideal for daily use, making every trip quicker and more comfortable.
Ventilation for Maximum ComfortThe ventilation ensures excellent air circulation within the car seat.
- Integrated air channel system
- Reduced heat build-up
- Thermal comfort in all seasons
- Breathable mesh fabric
- Up to 6x more ventilation
- Ideal for hot climates
Perfect for keeping your baby comfortable even on long journeys.
Adaptable Growth and ErgonomicsThe Cybex Sirona Gi i-Size accompanies the child's growth from the first months up to approximately 4 years.
- Adjustable headrest
- Multiple recline positions
- Newborn insert (optional, sold separately)
- Continuous ergonomic adjustment
A car seat designed to evolve with your child.
How to use the Cybex Sirona Gi i-Size Stone Grey Car Seathttps://www.youtube.com/watch?v=5O3jvCdv4f0
Technical Specifications Details Model Cybex Sirona Gi i-Size Safety Standard UN R129/03 (i-Size) Child Height 61 – 105 cm Maximum Weight Up to 20 kg Recommended Age From 3 months up to approximately 4 years Travel Position Rear-facing (up to 20 kg) and forward-facing (min. 15 months) Rotation System 360° Rotation Installation ISOFIX with integrated base Safety System Linear Side-impact Protection (L.S.P.) Recline Multiple adjustable positions Headrest Height adjustable Ventilation All-round ventilation (Plus version with breathable fabric) Compatibility Compatible with most ISOFIX vehicles Compatible Accessories Newborn insert, summer cover, SensorSafe, cup holder Instruction manualdownload
Frequently Asked Questions Cybex Sirona Gi i-Size Stone Grey Car SeatWhat is the recommended age for the Sirona Gi i-Size?
From 3 months up to approximately 4 years (61 to 105 cm, up to 20 kg).
Can the car seat be used forward-facing?
Yes, but only after 15 months and 76 cm. The rear-facing position is always safer.
How does the 360° rotation work?
It allows the seat to be fully rotated to facilitate access to the child and switch between positions.
Does the ventilation really make a difference?
Yes. All-round ventilation significantly improves thermal comfort, especially in the Plus version.
Does the car seat have good safety ratings?
Yes. It has received ADAC awards and complies with the i-Size UN R129 standard, ensuring high safety standards.
Why order the Cybex Sirona Gi i-Size Stone Grey Car Seat from Bonabebe ❤
- With us, you will have specialized human support before, during, and after the purchase
- Child road safety techniques
- Safest products on the European market for babies
- Babywearing consultants
- Local business
- Women-owned
- LGBTQ+ friendly
| Safety standard | UN R129/03 (i-Size) |
|---|---|
| Child height | 61–105 cm |
| Maximum weight | Up to 20 kg |
| Recommended age | From 3 months to approximately 4 years |
| Travel position | Rear-facing (up to 20 kg) and forward-facing (min. 15 months) |
| Rotation system | 360° rotation |
| Installation | ISOFIX with base included |
| Safety system | Linear Side-impact Protection (L.S.P.) |
| Recline | Multiple adjustable positions |
| Headrest | Height-adjustable |
| Ventilation | All-round (Plus version with breathable fabric) |
| Compatibility | Compatible with most ISOFIX vehicles |
- Cybex Sirona Gi i-Size car seat
- Isofix base included
Highlights and features of Cybex Sirona Gi i-Size Plus Car Seat - Stone Grey

360° rotation

Rear-facing up to 20 kg

Linear Side-impact Protection (L.S.P.)

Ventilation for maximum comfort

Adaptable growth and ergonomics
Why you'll love it
See in video
Certifications and approvals
i-Size approval ensuring high safety standards, with mandatory rear-facing installation up to 15 months and protection for the head, neck and spine.
Recognised with ADAC awards, one of the most rigorous European bodies for child safety testing, based on demanding criteria (including ADAC 2022).
It received positive ratings from Stiftung Warentest, another leading European safety testing body.


