The Solution S i-Fix grows with your child and adapts to their changing needs, just like parents do. This versatile child seat is now certified according to the latest UN R129/03 safety standard, which includes stricter side impact tests, among other things. The patented, adjustable headrest helps prevent the head from tilting forward during sleep. This keeps the child's head within the safety zone at all times, which is especially important in the event of a side impact. Together with the L.S.P. system, this provides increased safety for the child. The 12-position height-adjustable headrest can be tailored to the child's individual space requirements. The sophisticated one-hand operation allows parents to quickly and easily adjust the seat while on the go.