Cybex says that as the Sirona M2 is designed to also accommodate the older child, it wouldn't be practical to lift such a weight in and out of the car.

You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Whether rear or forward-facing, the CYBEX Sirona M2 i-Size’s integrated Linear Side-impact Protection system increases the level of safety in case of a side-impact collision. The CYBEX Sirona M2 i-Size complies with the new European requirements and regulations for car seats UN R129. A unique smart chest clip and monitoring system that ensures the safety and health of your child is always your first priority.

Always make sure that the load leg is folded out completely (pull out the load leg by pushing the adjustment button out until it touches the vehicle floor).

If your child disappears behind the impact shield, then he/she is definitely too small for the seat. It comes with a base and can be mounted using the ISOFIX system, allowing it to be securely placed both forward and rear facing.system can be folded out on the side facing the door and reduces the force of a side-impact collision in combination with the head and shoulder protectors. The 12-position height-adjustable headrest provides extra protection for every age while the integrated L. The Sirona's big selling point is that it can be used rear-facing until your child is 105cm tall (around 4 years old). In summary, the Cybex Sirona M2 i-Size is a safe and practical car seat that prioritizes the comfort and safety of young passengers.