Baboo
Cybex · Car Seats
Cybex Sirona S2 i-Size (birth-105 cm)
★★★★★ 4.9 · 8 reviews
€379.00
€435.99
In stock
incl. VAT · 🚚 free delivery over €49.00 to Germany · 2–4 business days · delivery info
The Cybex Sirona S2 i-Size is a high-safety, full‑range car seat that grows with your child from birth up to 105 cm. Its 360° rotation lets parents place and buckle their child easily while the extended rearward-facing option provides superior crash protection for toddlers. Advanced side-impact protection, adjustable headrest with integrated harness, and multiple recline positions ensure comfort for long journeys. Removable, machine‑washable covers and simple ISOFIX installation make it practical for everyday use.
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Free delivery over €49.00Germany · 2–4 business days
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30-day free returnsUnused items, full refund
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2-year guaranteeOfficial brand warranty
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Secure checkoutEU safety-tested products
Specifications
| Certification | i-Size (UN R129/03) |
| Suitable Height | 40 - 105 cm |
| Rearward-facing Max Height | 105 cm |
| Installation | ISOFIX base (integrated) with support leg |
| Rotation | 360° swivel for easy access |
| Weight (seat only) | 13.5 kg |
| Materials | Energy-absorbing shell, breathable fabric cover (polyester blend) |
| Recline Positions | 4 recline positions (multiple rear/rearward options) |
| Washable Cover | Removable, machine washable at 30°C |
| Country of Design | Germany |
| Brand | Cybex |
| SKU | 148 |
Reviews
4.9
★★★★★
based on 8 reviewsEmma S.✓ Verified purchase2026-06-16
★★★★★
We have used the Sirona S2 since our son was born and couldn't be happier. The 360° rotation makes late-night changes so much easier and the extended rearward-facing gives us peace of mind. Installation was straightforward with ISOFIX.
Leon M.✓ Verified purchase2026-06-12
★★★★★
Fantastic build quality and very comfortable for our 2-year-old. The adjustable headrest and harness are simple to use as he grows.
Lars T.✓ Verified purchase2026-06-06
★★★★★
Amazing rearward-facing range — our toddler sits rear-facing comfortably. Very reassuring in terms of safety.
Matteo P.✓ Verified purchase2026-05-29
★★★★★
We used this from birth and the integrated harness is really convenient. The recline positions are great for naps.
Lucas D.✓ Verified purchase2026-05-19
★★★★★
Robust and very well designed. Our 3-year-old seems comfortable on long drives and the side-impact protection feels reassuring.
Noah F.✓ Verified purchase2026-05-09
★★★★★
Excellent seat. The rotation made life so much easier when my daughter was a newborn. Worth the price.
Lena W.✓ Verified purchase2026-04-28
★★★★★
We swapped from an older model and the improvements are noticeable. Safer and more comfortable for our toddler.
Chiara B.✓ Verified purchase2026-04-15
★★★★☆
Great safety features and rotation, but the seat is heavier than I expected which makes transferring between cars tricky. Still excellent for daily use with our 11-month-old.
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