Car seats · Britax Römer
Britax Romer Adventure Plus- Maximum child weight:
- 36 kg
- Forward-facing max weight:
- 36 kg
- Reference price:
- SAR 434
Britax Romer Adventure Plus vs Cybex Sirona Gi-Size: which one suits you?
The two differ in 4 of the specs we have recorded, and the Britax Romer Adventure Plus is cheaper by SAR 1,006 (prices checked 5 Nov 2026).
Which one should you choose?
- Paying less: cheaper by SAR 1,006
- Higher maximum child weight: 36 kg vs 20 kg
Choose the
Cybex Sirona Gi-Size if you care about:- No clear lead in the recorded specs; design or brand preference may decide.
The deciding difference here: maximum child weight and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Car seats · Cybex
Cybex Sirona Gi-Size- Maximum child weight:
- 20 kg
- Child height (from):
- 61 cm
- Reference price:
- SAR 1,441
Key differences
Maximum child weight
✓ 36 kg20 kgChild height (from)
100 cm61 cmProduct weight
5.2 kg13 kg
Specifications side by side
11 of 11 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 434 | SAR 1,441 |
| Maximum child weight | ✓ 36 kg | 20 kg |
| Forward-facing max weight | 36 kg | — |
| Minimum child weight | 15 kg | — |
| Child height (from) | 100 cm | 61 cm |
| ISOFIX | — | Yes |
| Safety certification | — | UN R129/03 (i-Size) |
| i-Size (R129) | Yes | Yes |
| 360° rotation | — | Yes |
| Headrest positions | — | 12 |
| Product weight | 5.2 kg | 13 kg |
| Dimensions | 42 × 44 × 63 cm | 71 × 44 × 75 cm |
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Similar comparisons
Direct comparison questions
What is the difference in maximum child weight between the Britax Romer Adventure Plus and the Cybex Sirona Gi-Size?
Maximum child weight is higher on the Britax Romer Adventure Plus: 36 kg vs 20 kg on the Cybex Sirona Gi-Size. If this spec is your priority, the difference favours it.
What is the difference in i-size (R129) between the Britax Romer Adventure Plus and the Cybex Sirona Gi-Size?
No difference here: i-size (R129) is Yes on both.
What is the difference in child height (from) between the Britax Romer Adventure Plus and the Cybex Sirona Gi-Size?
Britax Romer Adventure Plus: 100 cm; Cybex Sirona Gi-Size: 61 cm. A higher value is not necessarily better for you.
What is the difference in product weight between the Britax Romer Adventure Plus and the Cybex Sirona Gi-Size?
Britax Romer Adventure Plus: 5.2 kg; Cybex Sirona Gi-Size: 13 kg. A higher value is not necessarily better for you.