Description
360° Safety and Comfort from Birth to 4 Years
For South African parents, the Cybex Sirona G i-Size is the ultimate toddler car seat that combines top-tier safety, comfort, and convenience. Designed for children from birth (with newborn inlay) up to 4 years, this award-winning car seat ensures your little one is protected, supported, and comfortable every step of the way.
Paired with the Base G, it is part of the Cybex G-Line Modular System, which grows with your child — from the Cloud G i-Size infant seat up to the Sirona G toddler seat. That means you invest once and enjoy up to four years of safety and comfort.
Rear-Facing Travel: The Safest Position for Your Child
Rear-facing travel is scientifically proven to be the safest way for young children to travel. The Cybex Sirona G i-Size offers up to 50% higher safety levels compared to forward-facing positions¹.
In a frontal collision, your child’s body is pressed into the padded car seat shell, which minimises movement and reduces forces acting on the neck, providing critical protection during the most vulnerable moments. While rear-facing is mandatory up to 15 months (76 cm), this seat comfortably supports rear-facing travel until your child reaches 20 kg, giving you peace of mind for longer.
360° Rotation for Stress-Free On and Off-Boarding
One of the standout features of the Sirona G i-Size is its 360° rotation, which makes getting your child in and out of the car effortless.
Swivel towards the car door for easy access, even when reclined.
Single-handed operation reduces strain on your back.
Adjusts to any recline position, ensuring comfort while you strap them in.
This feature is especially useful in tight parking spots or busy city traffic — convenience that parents will truly appreciate every day.
Grows with Your Child: Adjustable Headrest and Harness
The Sirona G i-Size adapts to your child’s growth:
12-position adjustable headrest ensures a tailored fit at every stage.
Harness automatically lengthens with headrest adjustments.
One-hand operation makes adjustments easy, even while holding your child.
From toddler to preschooler, this seat guarantees safety, support, and comfort throughout every stage of development.
Optimal Comfort with All-Round Ventilation
South Africa’s climate can vary from hot summer drives to cooler winter mornings. The Sirona G i-Size includes all-round air ventilation that keeps your child cool, comfortable, and sweat-free.
The Plus version features specially engineered mesh fabric, which is six times more breathable than standard seat fabrics. Air flows freely through the channels in the seat, ensuring a comfortable temperature regardless of season or journey length.
Side-Impact Protection for Extra Peace of Mind
Safety is never an afterthought. The Linear Side-impact Protection (L.S.P.) system is integrated into the seat shell and headrest, absorbing impact forces and reducing the risk of injury in the event of a side collision.
Combined with the energy-absorbing seat shell, your child is better protected in every direction, giving parents extra confidence on urban roads, highways, or long road trips.
Adjustable Recline for Comfort at Every Stage
No matter your child’s age, the Sirona G i-Size allows them to travel in comfort:
Five recline positions in both rear and forward-facing modes.
Boarding position for easy access without straining parents or child.
One-hand recline function lets your sleeping child stay undisturbed.
Whether your child is napping, awake, or enjoying the scenery, the seat ensures an ergonomic, comfortable position throughout the journey.
Straightforward Installation and Stability
Installing the Sirona G i-Size is simple and secure with:
Ergonomic ISOFIX handle for direct connection to the Base G.
Extendable load leg for extra stability and reduced forward rotation during collisions.
Visual indicators confirm the seat is correctly installed and ready to protect.
The result is quick, safe, and stress-free setup for parents who value simplicity and peace of mind.
Easy On-Boarding for Parents
The Sirona G i-Size is designed to make life easier for parents:
Swivel seat brings your child closer to you.
Belt holders keep straps out of the way while seating your child.
Reduces strain on parents’ backs, even when handling larger toddlers.
This thoughtful design helps parents maintain convenience and safety without compromising comfort for the child.
Part of the Modular G System: One Base, Two Seats
The Sirona G i-Size works seamlessly with the Cybex Base G, which also supports the Cloud G i-Size infant seat. This modular system allows your child to transition safely from newborn to toddler without changing the base or compromising on safety:
One base supports two seats.
Provides continuity and stability from birth up to 4 years.
Ideal for families seeking a long-term investment in child safety.
Technical Specifications
| Feature | Details |
|---|---|
| Model Name | Cybex Sirona G i-Size |
| Type | Toddler car seat |
| Age Range | Approx. 3 months – 4 years (birth with newborn inlay) |
| Child Height | 61 – 105 cm (40 cm with newborn inlay) |
| Child Weight Max | 19 kg |
| Installation | Base G with ISOFIX |
| Rotation | 360° swivel |
| Safety Standard | UN R129/03 (i-Size) |
| Side-Impact Protection | Linear Side-impact Protection |
| Ventilation | All-round, Plus Line mesh (6x breathable) |
| Recline Positions | 5 in both rear and forward-facing |
| Headrest Positions | 12 adjustable |
| Fabric Care | Machine washable at 30°C |
| Compatibility | Base G, Car Seat Cup Holder, SensorSafe 4-in-1 Kit Toddler, Newborn Inlay, ISOFIX Guides |
Why South African Parents Choose the Sirona G i-Size
Rear-facing travel for up to 50% higher safety compared to forward-facing.
360° rotation reduces strain on parents while boarding.
Adjustable headrest and harness grow with your child.
All-weather comfort with advanced ventilation and mesh fabric.
Linear Side-impact Protection enhances security during side collisions.
Modular system with Base G ensures continuity from birth to 4 years.
