Cybex Sirona Gi i-Size


Ultimate comfort and safety, for their first four years. The rear-facing Cybex Sirona Gi i-Size has 360° rotation for easy boarding. All-round air ventilation for cooler rides. Extended rear-facing for safer travel up 20kg.


Orders placed by 12pm are allocated with DPD on a 24hr courier service for dispatch the same day where possible or with Royal Mail 1st Class for smaller items. Orders should arrive with you within 1-2 working days of collection by the courier for shipment.


**Please note we do not dispatch or deliver goods on Saturdays, Sundays or on days when our little peas shop in Dunfermline is closed (i.e. public holidays, over Christmas etc.)**


For more delivery info you can read our delivery terms and conditions.

Stress Free Returns

We thank you for shopping with us, and hope that you are very happy with your purchase, but we understand that you may at some point wish to return an item to us for various reasons. If you do choose to return an item, our aim is to make that process as quick and convenient as possible.


Any refunds will be issued less the relevant collection charges once the item has been received back into store. Refunds will be made back via the original payment method and will be processed within 14 days by little peas ltd.


For more information please read our returns, refunds & exchanges terms and conditions.

Product Description

Cybex Sirona Gi i-Size

Ultimate comfort and safety, for their first four years. The rear-facing Cybex Sirona Gi i-Size has 360° rotation for easy boarding. All-round air ventilation for cooler rides. Extended rear-facing for safer travel up 20kg.

The latest car seat in our successful Cybex Sirona line is the most comfortable yet: the Cybex Sirona Gi i-Size. This car seat also features integrated Linear Side-impact Protection for defence from all directions.

A range of innovative features also upgrades your child’s comfort, including 360° rotation in any recline position with the easy rotation handle, for smooth on and off-boarding. Innovative all-around 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 Cybex Sirona Gi i-Size.

What are the features of the Cybex sirona Gi i-Size ?


Rear-facing is one of the safest ways to travel. In the critical first moments of a front impact, the child’s body is pushed against the padded car seat shell, minimising movement and reducing the 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 Cybex Sirona Gi i-Size is designed for comfortable rear-facing travel until your child weighs 20 kg.​ (*compared to the same seat forward-facing in a frontal crash. Result of internal testing using 2,022 ADAC frontal crash test criteria.)


A stress-free start to your journey. Just swivel the car seat to face the car door and get your child onboard. You avoid back strain, while your child stays comfortable in any recline position.


Comfort in any season. All-round air ventilation lets air flow through channels in the car seat, carrying away heat and helping avoid a sweaty ride for your little one. The Plus version also includes mesh fabric that increases breathability up to six times compared to regular fabrics.


As your baby grows, adjust the Cybex 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 only one hand is required.


Integrated 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 forces on the child.


Find the ideal recline setting, whether your little one is a new born or a growing child. Five positions are available in both riding directions – and in the boarding position, too. And when your child falls asleep, you can recline the seat with one hand, letting them dream that little bit longer.


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



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

PRODUCT DIMENTIONS: L 710 mm / W 440 mm / H 750 mm

Cybex Sirona Gi i-Size Installation Instructions

Tethers In An Extended Rear Facing Car Seat

Additional information


Lava Grey, Moon Black, Beach Blue (Plus), Hibiscus Red (Plus), Lava Grey (Plus), Moon Black (Plus), Ocean Blue (Plus)

Age Group

6 Months – 4 Years

Car Seat Facing Position

Forward or Rearward

Child Weight Capacity


Extended Rear Facing


ISOFIX Compatibility



Sirona Gi i-Size

Rotating Seat


Related Products

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Cybex Sirona Gi i-Size for sale, Dunfermilne Fife

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If you find a product for sale at Little Peas that’s cheaper elsewhere we will endeavour to match the lower price. This applies to all branded items for sale at any UK retailer: in stores, catalogues and online (excludes auction websites such as eBay) Price match requests will only be considered if the product in question is identical to the competitor’s and in stock, listed as new (excludes used and ex-display items) and currently sold by the retailer. The price match applies to all products but cannot be used in conjunction with any other offers or discounts. Our offer to price match can be withdrawn at any time upon the discretion of the manager. A price match will only be agreed at time of purchase and cannot be applied retrospectively.

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