Cybex SIRONA Gi i-Size Car Seat



Stock: Please choose your option Cybex SIRONA Gi i-Size Car Seat - Moon Black - 522001637 - In Stock | Delivered in 1-2 Days Cybex SIRONA Gi i-Size Car Seat - Lava Grey - 522001653 - In Stock | Delivered in 1-2 Days Cybex SIRONA Gi i-Size Car Seat - Ocean Blue PLUS - 522001661 - In Stock | Delivered in 1-2 Weeks Cybex SIRONA Gi i-Size Car Seat - Beach Blue PLUS - 522001669 - In Stock | Delivered in 7-10 Days Cybex SIRONA Gi i-Size Car Seat - Hibiscus Red PLUS - 522001685 - In Stock | Delivered in 1-2 Days Cybex SIRONA Gi i-Size Car Seat - Moon Black PLUS - 522004851 - In Stock | Delivered in 1-2 Weeks Cybex SIRONA Gi i-Size Car Seat - Lava Grey PLUS - 522004859 - In Stock | Delivered in Late December

Please select a colour

The latest car seat in our successful Sirona line is the most comfortable yet: Cybex SIRONA Gi i-Size Car Seat.


Earn up to 299 Loyalty Points.

  • Partially - Pay with Payment Plan
    Spread the cost on a Payment Plan and receive your items after final payment.
  • Klarna - Buy Now, Pay Later!
    For orders under £1000, we offer "Pay in 3” - 3 interest free instalments with a soft credit check that will not impact your credit rating.
    For orders over £1000, you can apply in the checkout for "Pay in 6” - 6 interest free instalments that require a credit application.
  • PayPal - Pay with PayPal
  • Google Pay - Pay with Google Pay
  • Apple Pay - Pay with Apple Pay

Cybex SIRONA Gi i-Size Car Seat

The latest car seat in our successful Sirona line is the most comfortable yet: Cybex SIRONA Gi i-Size Car Seat. Extended rear-facing for safer travel up 20kg, this car seat also features integrated Linear Side-impact Protection for defense from all directions.

A range of innovative features also upgrade your child’s comfort, including 360° rotation in any recline position with the easy rotation handle, for smooth on and off boarding. Innovative all-round air ventilation means the ride stays cool, and you have the option of choosing mesh fabrics for maximum breathability with the Plus fabric version.

Five recline positions are available in either direction ‒ tailored comfort for your child, whether they’re a tiny newborn or a fully-grown four-year-old (newborn inlay accessory sold separately). 360° of comfort and safety for their first four years: the Sirona Gi i-Size.

Extended rear-facing – one of the safest ways to travel in a car seat. In the critical first moments of a frontal impact, the child’s body is pushed against the padded car seat shell. This keeps movement to a minimum and reduces force acting on the child’s neck. Mandatory up to 15 months (76 cm), we recommend keeping your child rear-facing for as long as possible. The Sirona Gi i-Size is designed for your child to sit comfortably rear-facing until they weigh 20 kg.
*compared to the same seat forward-facing in a frontal crash. Result of internal testing using 2022 ADAC frontal crash test criteria.

A stress-free start to your journey. Just swivel the car seat using the easy rotation handle to face the car door and get your child onboard, in any recline position. You can avoid back strain, while your child stays comfortable in the recline position that fits them, whether they’re a newborn or a toddler. Switching from rear to forward-facing travel is just as easy.

The all-round air ventilation of Sirona Gi i-Size allows air to flow through ventilation channels within the car seat, carrying away heat and helping avoid a hot and sweaty ride for your little one. Choosing the mesh fabric available on the Plus version increases airflow even more – with up to 6 times more breathability than comparable car seat fabrics. The clear choice for comfort in any season.

When you’re getting your child strapped into the car seat, you need all the help you can get. The Sirona Gi i-Size features ingenious loops designed to keep the harness out of the way as you get your child onboard.

As your baby grows, adjust the Sirona Gi i-Size headrest for a comfortable fit at every stage. 12 positions allow a tailored fit to your child, with the harness lengthening automatically with each adjustment. And it can be adjusted with one hand for extra ease of use.

The Linear Side-impact Protection defends your child against the force of a side impact. Working together with the energy-absorbing shell, the L.S.P. System significantly reduces the effect of impact force on the child.

For every moment, whether your little one is a newborn or a growing child, the ideal recline setting is available in both riding directions – and in the boarding position, too. And when your child falls asleep in the seat, you can recline it with one hand, letting them dream that little bit longer.

It only takes moments to set up your Sirona Gi i-Size. Use an ergonomic handle to click the ISOFIX into the vehicle seat and extend the load leg down to the car floor. Both provide stability and extra safety in the event of an accident. Visual indicators help you confirm the seat is ready to protect.

Regulation: UN R129/03
Child Height: 61 – 105 cm (From 40 cm with newborn inlay)
Child Weight: Max. 20 kg; from approx. 3 months up to 4 years (From birth with newborn inlay)

Additional information



Car Seat Orientation

Rear and Forward Facing



Cybex Colour

Moon Black PLUS, Lava Grey PLUS, Ocean Blue PLUS, Beach Blue PLUS, Hibiscus Red PLUS, Lava Grey, Moon Black

Madagascar 01
We partnered with Ecologi to grow our very own company forest. We now offset all the carbon emissions of our team’s personal and professional lives by planting groves of trees. In February 2021, Baby Birds turned 28 years old. Like many of you, we had a thought-provoking year, watching the world change before us during the pandemic. Our youngest Baby Bird turned 1 - and we want to build a better future for her and all babies on the planet.
Payment Options
Spread the cost of your purchase with our payment options. 0% interest, we offer Payment Plan and Klarna. Take the pressure off shopping for your baby essentials.
Gift Vouchers
Do you know someone expecting a baby? Treat them to a Gift Card, redeemable in store and online. Add a message for the personal touch.