The Stages FX car seat features a 3-in-1 design that accommodates a growing child. It offers rearward- or frontward-ranging positions from birth to 18 kg, with research suggesting five times more protection in the rearward position for an infant's neck and spine. Features: Rearward facing birth to 18kg/4 years (Belted only) Forward facing 9kg to 25kg/7 years (Belted or Isofix) Side impact protection Ventilated sides 5 position harness and headrest height adjustment, adjust simultaneously and with one hand No-rethread harness height adjustment