The Cybex Sirona M2 i-Size grows with your child and corresponds with the new European requirements and regulations for child safety seats ECE R-129, also called “i-Size”. The new SensorSafe technology provides an outstanding level of safety for your little passenger – children have never been safer when traveling by car.Rear-facing child car seat suitable from birth up to an age of approx. 4 yearsIncluding SensorSafe, app via smartphone, Android and IOSRear-facing mode: from birth up to body height of 105 cmForward-facing mode: 76 – 105 cmMinimised risk of injury in case of a side impactL.S.P.-System – linear side impact protectors reduce the force of a side impactSeating and recline positions can be adjusted single-handedly (rear-facing mode: 5 positions; forward-facing mode: 3 positions)Headrest can be adjusted in 12 different levelsMagnetic belt holders make it easy to get in and out of the seatThe CYBEX Sirona M2 i-Size must be used in conjunction with the Base M.