
Cybex Sirona G i-Size Car Seat + Base G
by Cybex
£303.95
MPN523001203,523001171
Prices updated 6 Apr 2026
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Product Description
Sirona G i-Size The Cybex Sirona G i-Size is suitable from 3 months to 4 years (61-105cm or from 40cm with newborn inlay - sold separately) and offers safety and comfort for your child. This car seat allows rearward-facing travel all the way up to 105cm to ensure your child is travelling in the safest possible position. This minimises movement and lowers the force on your little one’s neck. When used in conjunction with the Base G, the Sirona G i-Size can rotate 360° in any recline position with just one hand, making getting your child in and out of the car seat simple and easy. Ensure optimal ergonomics for yourself while providing utmost comfort to your child in an adjustable reclined position that caters to their needs, regardless of whether they are an infant or a young child, thus minimising the risk of back strain. The telescopic Linear Side-impact Protection (L.S.P) in conjunction with the energy absorbing shell remarkably reduces the force of a side impact collision, providing additional safety for your child. The Sirona G i-Size is fully ventilated to promote healthy airflow through the car seat channels and dispel heat, ensuring your little one is cool and comfortable as they travel. The headrest adjusts to 12 height positions to adapt to your growing child and there is a one-hand recline function with 5 settings for the most comfortable sleep in either direction. The Base G (sold separately) ensures a safe and smooth installation with one click and the ISOFIX connectors provide an intuitive and secure car seat. Enhance your car's stability and safety with advanced features such as a load leg, designed to stop forward rotation in case of an accident. Additionally, the user-friendly ISOFIX bars securely connect the Base G (sold separately) to your car’s seats. Suitable for children 61-105cm (from 40cm with newborn inlay - sold separately) Max. 20 kg; from approx. 3 months up to 4 years (From birth with newborn inlay - sold separat Rearward facing up to 105cm, approx. 4 years 360° rotation mechanism with the use of the Base G Integrated L.S.P. System Energy-absorbing shell 12 position height-adjustable headrest Five recline positions in either direction One-hand harness length adjustment Clever harness loops included Full air ventilation ISOFIX installation - load leg and intuitive ISOFIX bars Complies with i-Size regulation UN R129/03 Dimensions: L 71 x W 44 x H 75cm Weight: 6kg Weight (with base): 13kg Base G The Cybex Base G works perfectly in conjunction with the Cloud G i-Size and Sirona G i-Size car seats to offer a simple and secure installation into your car, keeping your little one safe on every journey. With the Base G, pulling the rotation handle spins the car seat towards the car door and then releases it to easily and comfortably position your child in their seat. Ensuring getting your child in and out of their car seat is fuss-free, the rotation mechanism with easily accessible rotation handle provides 180° rotation of the Cloud G i-Size and 360° rotation of the Sirona G i-Size for smooth transition between rear-facing and forward-facing positions. The enhanced intuitive ISOFIX-Release buttons make the G base a breeze to use, whilst the Driving Direction Control (D.D.C) button guarantees the Cloud G i-Size car seat is installed and used only in the rear-facing position. There are two additional settings for the rear-facing or forward-facing travel in the Sirona G i-Size. This base is secured to your car with its ISOFIX connectors and load leg which offer both safety and stability, and can also be installed by using the cars seat belt to attach the seat to the base in vehicles without ISOFIX connectors. Features: Part of the Cybex G Line Modular System - compatible with the Cloud G i-Size and Sirona G i-Size Smooth and comfortable boarding Quick and simple installation using ISOFIX and load leg Secure One-hand rotation mechanism with easily accessible handle Driving Direction Control (D.D.C) button Enhanced intuitive ISOFIX-Release buttons Provides 180° rotation of the Cloud G i-Size to get your baby in and out of the vehicle easily Provides 360° rotation of the Sirona G i-Size to easily enable forward-facing or rear-facing positions Compatible with Cloud G i-Size and Sirona G i-Size Specification: Suitable from birth to 24 months (approx.) (when used in conjunction with the Cloud G i-Size) Suitable from birth to 4 years (approx.) (when used in conjunction with the Sirona G i-Size) Complies with i-Size regulation UN R129/03 | Cybex Sirona G i-Size Car Seat + Base G
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