Sirona S i-Size
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No more awkward lifting and back pain when helping your child in and out of the car seat. The innovative one-hand 360° rotating mechanism provides a comfortable entry and exit position, ensuring less strain on parents' backs.
- 360° rotation with easy entry position
- Rearward facing up to 105 cm, approx. 4 years
- Driving Direction Control (DDC)
- Energy Reduction Technology (ER-Tech)
360° convenience for you – optimised safety for your child
Because it's the safest way for your little one to travel, the Sirona S i-Size provides comfortable rear-facing travel for children up to 105 cm, approx. 4 years. The Driving Direction Control (DDC) prevents forward-facing use before the child is at least 16 months old and 76 cm tall. Sirona S i-Size also offers increased safety for your child in the forward-facing position thanks to the Energy Reduction Technology. It is activated as the forces reach their full impact in a head-on collision: The headrest slides down, progressively limiting the neck’s exposure to the impact forces, and subsequently locks into position.
- i-Size Norm, UN R129/02
- Height: 45 cm - 105 cm
- Weight: max. 18 kg
- Age: From birth up to approx. 4 years
- 360° Rotation Mechanism
- Rear-Facing Car Seat
- Driving Direction Control
- Energy Reduction Technology
- Integrated Linear Side-Impact Protection
- Height-adjustable headrest
- One-Click Installation with ISOFIX
- Energy-absorbing shell
- Belt holder
- One-hand recline function
- Fabric covers machine washable at 30°
Installation with base: Pay attention to the i-size logo. If a vehicle seat is marked with this logo, it is suitable for use with all i-size child seats and therefore will not appear in our list of compatible vehicles. If your vehicle does not have an i-Size seat, please check the compatibility of your vehicle. If your vehicle is not displayed, please contact our customer service team.
- 710 mm
- 430 mm
- 640 mm
- 14.3 kg
What is included?
- Sirona S i-Size Toddler Car Seat
- Newborn Inlay
- Integrated Base
- User Guide
Fits in your i-Size compatible car.
You may also need
FAQ - Sirona S i-Size
We at CYBEX strongly recommend that you replace a seat after any kind of accident. This is because tiny hairline cracks, which may not be visible to the naked eye, can appear in the plastic parts of a seat after an accident. These cracks can pose an increased risk to safety.
Please refer to the retailer where you bought your CYBEX seat. They will deal with the matter on your behalf.
Thick clothing prevents the harness from lying snugly against the body. This incorrect belt positioning could result in the harness slipping off the shoulder. For this reason, your child should wear everyday clothing. Thick clothing such as winter jackets should be avoided where possible. Once your child has been positioned in the seat, he/she can be covered with an extra blanket for warmth.
No, this seat is not approved for use on an airplane.
The head of a young child is large and heavy in proportion to the rest of their body and their neck is relatively weak. A rear-facing child restraint supports the head and neck and is thought, therefore, to reduce the risk of neck injury. Although this remains a topic for research, European regulators are satisfied that by 15 months, the neck has developed enough strength to withstand the forces in a typical crash. For this reason, 15 months was set as the minimum age for rear-facing. However, many R129 child restraints are approved for longer rear-facing use, for example, by children up to 105 cm (around 4 years).
Relatively tall infants may rest their legs on the rebound bar. Bending the legs at the knee does not affect safety in any way. As long as the child has sufficient legroom we recommend using the seat in a rear-facing position, which exposes the child to less force in the event of a collision.
The L.S.P. Side-impact Protection has to be folded out on the side nearest the car door when the seat is installed either on the right or left-hand side of the rear seat. In this way, the best possible protection is provided in a collision. In this instance, it is important to ensure that only the side protector nearest the door is extended. If the seat is installed in the middle of the rear seat, the Linear Side-impact Protection (L.S.P. system) must not be used under any circumstances.
Yes, the side airbag can remain activated when using the car seat.
The Sirona S i-Size can be used for newborns and children from 45cm up to a height of 105 cm (maximum body weight: 18 kg). This roughly corresponds to an age of four years.
The Sirona S i-Size can be used for children up to a maximum body weight of 18 kg.
i-Size is a new European standard for car seats. It specifies, among others, that car seats have to be installed with ISOFIX, that infants must travel in a rearward facing position up to the age of 15 months and, for the first time, that side-impact protection is tested.
It is important to check whether the Sirona i-Size is compatible with your vehicle before you purchase it. This is because the Sirona S i-Size is solely an ISOFIX seat and can only be installed in i-Size certified vehicles or in vehicles with ISOFIX anchorage points. Before purchasing the seat, please refer to the compatibility list on the CYBEX website to see whether the Sirona S i-Size is compatible with your vehicle or not.
The Sirona S i-Size can also be used in cars without i-Size certification. However, it is important to emphasize that the vehicle must be fitted with ISOFIX anchorage points. Before purchasing the seat, please refer to the compatibility list on the CYBEX website to see whether the Sirona S i-Size is compatible with your vehicle or not.
The Sirona S i-Size is installed using the vehicle’s ISOFIX anchorage points. The one-click installation with the ISOFIX system is a simple way to install the seat in both, forward and rear-facing position and enhances safety. The integrated support leg ensures additional stability and absorbs the forces in case of an impact. A green indicator confirms the correct installation.
The Sirona S i-Size is solely an ISOFIX seat and can only be installed in vehicles with ISOFIX anchorage points or in i-Size certified vehicles. Please refer to the compatibility list on the CYBEX website to see whether the Sirona S i-Size is compatible with your vehicle or not.
We would like to draw your attention to the fact that the Sirona S i-Size should be used in a rear-facing position for as long as possible for maximum safety. However, the seat can optionally be switched to forward-facing. To do so, the seat can be rotated the forward-facing position once the child has reached a min. height of 76 cm and is 16 months old.
In a Sirona S i-Size your child is secured with a five-point harness. The harness should be strapped tightly so that there is space for one hand between the harness and the body of the child. In a forward-facing position, this harness system is fitted with an Energy Reduction Technology, reducing the forces on the neck of a child during a front crash by approximately 20%, compared to other existing harness systems.