A car seat with CYBEX?s world-renowned, patented reclining headrest which keeps the child?s head in the seat?s protected zone, up to 7x safer for their head and neck, keeping them comfortable when they nod off. Meeting the latest UN R129 regulations, this car seat will last you until your child turns 12. Thanks to its patented 3-position reclining headrest supporting your child?s head when they nod off, while keeping it up to seven times safer in the process, this car seat practically guarantees a sound sleep, with their neck and head well protected in the safety zone. Thanks to its 11-position height-adjustable headrest, both the head and the shoulder protectors of the Solution X i-Fix can keep pace with every growth spurt of your child up to 150 cm or until they are 12 years old. The car seat?s ISOFIX System offers enhanced safety and stability plus easy one-click installation. The seat?s connectors simply snap into the vehicle?s ISOFIX anchorage points and the connectors can easily be folded away, so that the seat is also compatible with cars not equipped with ISOFIX Features: UN R129/03 100 - 150 cm, from approx. 3 up to 12 years Approx. 15 - 50 kg Dimensions: L 380 mm / W 470 mm / H 640 mm Weight: 7 kg