CYBEX Sirona T i-Size 360° Rotating Toddler Car Seat


In Stock - Delivery Time 2-3 days

Awarded a GOOD (2,3), in the latest ADAC ratings, the CYBEX Sirona T i-Size combines luxurious comfort and safety. It’s just the perfect answer for rear-facing travel from birth up to 4 years old or choose to turn forward-facing after 76cm and 15 months old.


Enjoy the ultimate travel experience with the Sirona T i-Size – providing unparalleled comfort and safety in both rear and forward-facing positions, making every journey blissful for you and your little one. The 360° rotation allows for effortless on and off-boarding of your child. You can easily choose between extended rear-facing or comfortable forward-facing positions, thanks to the smooth one-hand rotation mechanism. Additionally, the one-hand adjustment allows for easy recline while keeping your other hand free. With integrated Linear Side-impact Protection and intuitive ISOFIX on the Base T (sold separately), you will have a worry-free ride. Get ready to enjoy each journey with your child and the comfortable and safe Sirona T i-Size.


The Sirona T i-Size provides superior protection in both travelling directions in the case of an accident. When in the rear-facing position it reduces the risk of an injury to the child’s neck and head, resulting in 50% higher safety levels*. In the case of an accident, the child is pushed towards the seat shell, where forces get distributed over the entire surface therefore reducing the impact. Legally a child must stay rear-facing until at least 15 months and 76 cm in height but we recommend using it for longer, up to four years if possible. The Sirona T i-Size’s versatility allows for forward-facing positioning once the child has grown, offering freedom of choice that suits you and your child. ​


The Sirona T i-Size breathable materials keep your little one cool.​



With the Sirona T i-Size, you can effortlessly on and off-board your child, thanks to its 360° rotation that smoothly rotates towards the car door. This feature minimizes any potential strain on your back during the boarding process. Legally a child must stay rear-facing until at least 15 months and 76 cm but we recommend using it for longer, up to four years if possible. Once your child has grown, you can easily choose between the rear or forward-facing position. It’s so simple, using just one hand, the seat can be smoothly rotated and reclined, ensuring that even the youngest passenger is comfortably boarded.​


Thanks to its height-adjustable headrest, the safety of the Sirona T i-Size evolves with your child, accommodating their rapid growth. With its 12 different positions, the car seat adapts to your child’s size during the first four years, providing steady protection throughout this time. When adjusting the headrest height the harness adjusts automatically to ensure a comfortable fit.​


The Sirona T i-Size is equipped with the proven Linear Side-impact Protection System (L.S.P.) which enhances safety in the event of an accident. Activate the L.S.P on the side of the car seat nearest the door, together with the energy-absorbing shell of the seat, the extended side protection reduces the initial impact forces by up to 25%**. If needed, the L.S.P. System can be easily stored away in the case of limited space in the car.


The ISOFIX Base T serves as a secure base for the Sirona T i-Size seat unit. It is equipped with ISOFIX and a load leg for easy and secure installation. The ISOFIX release buttons are user-friendly and intuitive, visual indicators confirm the correct setup on both the ISOFIX buttons and Load Leg. With these features, setting up the Sirona T i-Size is as easy as it gets, reassuring parents and providing a safe and comfortable ride.​


The five recline positions of Sirona T i-Size can be easily adjusted with just one hand, freeing up your other hand for different tasks. This feature works in both rear and forward-facing positions, providing additional comfort for your sleeping child while travelling.​


Small magnets located on either side of the Sirona T i-Size, allow you to attach the metal parts of the harness, keeping the straps  out of the way for a simpler the onboarding.​


The Sirona T i-Size includes a removable newborn inlay which provides a near-flat lying position, allowing for the use of the car seat from birth in the rear-facing position. The inlay helps keep the baby’s head in the most ergonomic position, especially while sleeping, to avoid breathing complications. To accommodate your baby as it grows, the newborn inlay should be removed once your child is taller than 60cm.​


The Sirona T i-Size is compatible with the CYBEX Base T and Base Z2. ​

*Compared to the same seat forward-facing in a frontal crash. Result of internal testing using 2022 ADAC frontal crash test criteria. 2 With Plus Line mesh fabrics​

**Compared to the same seat without L.S.P. in a side-impact test according to ADAC criteria


Delivery for purchases under €75.00 will cost €6.99 in the Republic of Ireland & Northern Ireland. 

Deliveries for purchases over €75.00 are free of charge in the Republic of Ireland & Northern Ireland. (Excludes furniture deliveries & Travel System deliveries)

*Furniture Delivery Charges apply as follows:

1-piece delivery (example cot-bed) €10.00

2-piece delivery (example cot-bed & dresser) €20.00

3-piece delivery (example cot-bed, dresser and wardrobe) €30.00


*Travel System Delivery Charge €15.00

(Example Pushchair & Car Seat Bundle)

Order Tracking

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