SKU: 10868054381
cybex sirona age range

cybex sirona age range CYBEX Sirona G3 i-Size Rotating Toddler Car Seat

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Description

cybex sirona age range CYBEX Sirona G3 i-Size Rotating Toddler Car SeatCYBEX Sirona G3 i Size 360 Rotating Toddler Car Seat Rear Facing to 4 Years The CYBEX Sirona G3 i Size is a 360 rotating toddler car seat designed to keep children travelling rear facing from approximately three months up to four years old, and from birth with the optional double newborn inlay accessory (sold separately). Certified to UN R129 04 and holding both an AGR back health seal and a Red Dot Award, the Sirona G3 combines proven safety

CYBEX Sirona G3 i-Size 360° Rotating Toddler Car Seat - Rear-Facing to 4 Years

The CYBEX Sirona G3 i-Size is a 360° rotating toddler car seat designed to keep children travelling rear-facing - from approximately three months up to four years old, and from birth with the optional double newborn inlay accessory (sold separately). Certified to UN R129/04 and holding both an AGR back health seal and a Red Dot Award, the Sirona G3 combines proven safety engineering with the kind of everyday practicality that makes a genuine difference across thousands of car journeys.

Up to 50% Higher Safety Levels Rear-Facing

The Sirona G3 is built around a straightforward but important principle: rear-facing travel is significantly safer for children than forward-facing. In a frontal collision - by far the most common type - a rear-facing seat's padded shell absorbs and distributes impact force across the child's back, shoulders, and head, rather than placing that force through the harness straps alone. CYBEX's internal testing shows that the Sirona G3 used rear-facing delivers up to 50% better protection compared to a conventional forward-facing seat. UN R129/04 (i-Size) regulations require all children to travel rear-facing until at least 15 months, and we strongly recommend continuing in the rear-facing position for as long as the seat allows - up to 105 cm in height, or approximately four years old.

360° Rotation for Effortless Boarding

One of the most challenging aspects of daily travel with a toddler is getting them settled in their seat without awkward lifting, twisting, or straining your back across the car door frame. The Sirona G3's 360° rotation resolves this directly. Rotate the seat to face the door, secure your child in comfort, then swing the seat back into the travel position. The rotation works in all recline positions, so you never need to adjust the recline angle before you can rotate - particularly useful when you have a sleeping child to move. The same smooth process applies when you arrive at your destination.

Advanced Linear Side-Impact Protection (L.S.P.) - 25% More Protection

The Sirona G3 features CYBEX's Advanced L.S.P. System, which deploys automatically when you first take the seat out of its packaging - no setup required. The energy-absorbing wings combined with a specially designed headrest reduce the force of a side collision by approximately 25% compared to the same seat without L.S.P. (based on internal testing). If space is limited - for example when fitting three seats across a rear bench - the inner L.S.P. wing can be folded away, though CYBEX recommends always keeping the door-side wing extended for maximum protection.

AGR-Certified Ergonomic Comfort

Holding the AGR Seal of Approval from Germany's independent back health organisation, the Sirona G3 is designed to support healthy posture throughout your child's development. The M-position keeps legs and hips correctly supported, aiding hip joint development over the months and years of use. A height-adjustable headrest grows with your child, and five recline levels - available in both rear-facing and forward-facing orientations - mean you can always find a comfortable, well-supported position whether your child is awake and alert or napping mid-journey.

Practical Details That Make a Difference

Belt holders keep the harness straps neatly out of the way when you're settling your child into the seat - a small detail that significantly reduces the fuss of getting a wriggly toddler buckled in. All-round ventilation keeps the seat environment comfortable across longer journeys and warmer days, with Plus Line versions adding a premium mesh fabric six times more breathable than conventional cover materials.

Part of the CYBEX G3 Modular System

The Sirona G3 is part of the CYBEX Modular G3 family, and fits onto the same CYBEX Base G3 as the CYBEX Cloud G3 infant car seat. If you started with the Cloud G3 from birth, transitioning to the Sirona G3 requires no new base purchase - it clicks onto the existing Base G3 in a single step, supported by ISOFIX connectors and a load leg for a stable, secure fit. Together, the three products form a complete birth-to-four-years solution; you can find the full set in our CYBEX G-Line Car Seat Bundle.

Please note: the Sirona G3 requires the Base G3 for installation in all vehicles. Unlike the Cloud G3, it cannot be secured using a vehicle seatbelt alone. Always verify compatibility using CYBEX's Car Compatibility Checker before purchase.

Visit our Dunfermline showroom to see the full CYBEX G3 Modular System in person, or browse our complete CYBEX car seats collection online.

Cybex Sirona G3 Specifications

Specification Detail
Standard UN R129/04 (i-Size)
Age range From approx. 3 months to 4 years
Age range with newborn inlay From birth (inlay sold separately)
Child height 61–105 cm
Child height with newborn inlay From 40 cm
Child weight Max. 19 kg
Seat weight 6 kg
Weight with Base G3 13 kg
Dimensions L 710 mm / W 440 mm / H 750 mm
Packaging dimensions L 71 cm / W 46 cm / H 38 cm
Gross packaged weight 8.1 kg
Net weight 6.4 kg
Recline positions 5 (rear-facing and forward-facing)
Side-impact protection Advanced L.S.P. — approx. 25% reduction vs. same seat without L.S.P.*
Rear-facing safety improvement Up to 50% vs. conventional forward-facing seat*
Installation ISOFIX + load leg via Base G3 (required; sold separately)
Belt-only installation Not available — base required in all positions
Forward-facing Permitted from 15 months and min. 76 cm
Aircraft approved No
Compatible base CYBEX Base G3 / Base G
Compatible infant seat (same base) CYBEX Cloud G3
Fabric care Machine washable at 30°C

*Based on CYBEX internal testing.

What's in the Box

  • CYBEX Sirona G3 toddler car seat
  • User guide

Base G3 and double newborn inlay accessory sold separately.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 10868054381

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Shopper00
Lowell, US
★★★★★ 1
US plugs didn’t work
Style: Type E/F-Germany France
Got all the way to Europe only to have the US plugs not work. Couldn't get any to work and the plugs did not go in. Only usb worked. Skip it. Now i have to lug it home for a refund.
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Reviewed in the United States on February 17, 2023
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Rain
Waukegan, US
★★★★★ 5
Bought for my upcoming European Vocation
Style: Type E/F-Germany France, Style: Type E/F-Germany France
I need a European plugadapter to use in Cruise. It seems to be permitted in a Carnival cruise line. This things has a super short power cord, so that it can hang a bit below a European wall outlet. That's a good design so that you won't block the neighbouring outlet. it's lightweight so I can put it in my baggage. the USB C ports is an essentials as it seems that other USB ports are not allowed to use in Europe after a few years. Anyway, this things is recommeded
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Reviewed in the United States on October 29, 2022
A
Verified Purchase
Alicia Ring Thomas
Cuba, US
★★★★★ 5
Nice
Really nice provide. Not too large. Holds 3 passports comfortably— 4 tightly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2025
T
Verified Purchase
Tex
Alexandria, US
★★★★★ 4
Great for keeping family passports organized while traveling
I bought this for our family’s recent trip to Europe after struggling on a previous trip to keep track of everyone’s passports. Last year I was constantly worried about losing one or forgetting where I put them, so having everything in one place made a huge difference this time. This holder fit all four passports perfectly and still had room for cards and even a spot where I could clip my keys inside. It ended up being one of those things I used constantly throughout the trip at airports, hotels, train stations, and checkpoints. As long as I had the case with me, I felt confident all four passports were where they needed to be. The material feels durable enough for travel, and the zipper worked smoothly the whole trip. The black color also looks clean and professional without standing out too much. Pros: Holds four passports comfortably Helped keep travel documents organized Durable feel and smooth zipper Extra storage for cards, cash, or keys Lightweight enough for travel Gave me peace of mind during a busy international trip Cons: Slightly bulkier than necessary for minimalist travel Could be slimmer for people who only want passport storage without extra pockets
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Reviewed in the United States on May 13, 2026
B
Becca
Dallas, US
★★★★★ 5
Great passport holder
I really like this family passport holder. This is the second one I buy since we travel with our kids internationally at least once a year. It’s a good way to keep document organized and on the ready. I like that it has space for four passport books, plus ID’s and cards. It also has a pen holder. And a couple zippered pockets. We also travel with our dogs and this case kept all our family’s and pet’s documents in one convenient place. It’s also easy to use. The zipper is easy to open and close. And I like that the strap is not on the zipper. The last holder I got has the strap on the zipper and when you opened it things could fall off if you weren’t super careful. I like that little pocket on the front. It’s convenient to keep boarding passes handy. The quality is great too. I didn’t even read about it being fire proof but that just makes it nicer. And it’s pretty easy to keep clean because the material can be just wiped down and doesn’t stain easily. We just keep or passports there and put them on our document area at home. So they’re ready to go whenever we need. Overall a great product small families traveling.
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Reviewed in the United States on February 12, 2025

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