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Cybex Sirona Gi i-Size (61–105 cm) with 360° rotation, integrated ISOFIX base and LSP side protection. Rear-facing up to 20 kg, all-round ventilation and 5 recline positions.
i-Size car seat with 360° rotation, designed to keep your child rear-facing for longer, with integrated LSP and all-round ventilation. Includes an integrated base with ISOFIX + load leg.
Key advantages explained clearly, with official images integrated for a premium look.
In a frontal impact, traveling rear-facing helps reduce movement and load on the neck and head. We recommend staying rear-facing for as long as possible.
Find the ideal recline for a newborn or a growing child. When your child falls asleep, recline with one hand for a peaceful rest.
All-round ventilation lets air flow through the seat’s channels to help move heat away and reduce sweating on journeys. The Plus version adds mesh for enhanced airflow.
Linear Side-impact Protection works together with the energy-absorbing shell to help reduce the forces of a side collision.
A 12-position headrest adapts as your child grows, and the harness automatically lengthens with each adjustment. You only need one hand.
Clever belt holders keep the harness out of the way while you place your child in the seat. Switching travel direction is just as easy.
Install in moments: click the ISOFIX connectors into place and extend the load leg. Visual indicators help confirm the seat is ready to protect your child.
*Compared with the same seat forward-facing. Internal testing using ADAC frontal-impact test criteria (2022).
Quick, clear visual guides to understand key functions.
Sirona Gi i-Size has an integrated base that installs using ISOFIX and a load leg, providing stability and a simpler installation process.
Official measurements to assess space and fit.
| Age range | Approx. 3 months – 4 years (from birth with newborn inlay) |
|---|---|
| Child height | 61–105 cm (from 40 cm with newborn inlay) |
| Child weight | Max. 20 kg |
| Approval | UN R129/03 (i-Size) |
| Installation | Integrated base · ISOFIX + load leg |
| Recline | 5 positions (both directions + boarding position) |
| Headrest adjustment | 12 positions (harness lengthens automatically) |
| Dimensions | 710 × 440 × 750 mm |
| Seat weight | 13 kg |
| Care | Fabric covers machine washable at 30 °C |
| Product code (example) | 524001447 (Fog Grey) |
Note: For maximum safety, we recommend rear-facing travel for as long as possible within the approved limits.
Compatible with: cup holder, summer cover, newborn inlay, SensorSafe 4-in-1 kit (1–3 years), ISOFIX guides.
It is approved for 61–105 cm (from 40 cm with newborn inlay) and up to 20 kg.
It is designed for comfortable rear-facing use up to 20 kg. We recommend keeping your child rear-facing for as long as possible.
It has an integrated base and installs with ISOFIX + load leg. Visual indicators help confirm correct installation.
Yes. Fabric covers are machine washable at 30 °C.
A safe specialist option for CYBEX car seats.
