Mars Features Seat certified un the R129 i-Size standard from 100 to 150cm (from 3 to 12 years old approximately). The different headrest heights mean the seat adapts to suit the child in all his stages of growth and the reclining positions of the backrest mean that it fits well against the seats of different vehicles. Installation in the forward facing position. The restraint system used is the vehicle ABC seat belt and it can be anchored to the car using the isofix system, although it can also be installed without isofix anchors. SPS (side protection system) helps to absorb energy in the event of side impact.