Child car seat carry weight 9 18 kg age 8 months 4 years group 1 with isofix side impact protection harness system 5 point safety harness padded seat belt exterior measurements 57 x 46 x 64 seat size 57 x 31 cm adjustable backrest central belt adjustment height adjustable adjustable headrest 7 x colour black seat reducer number of positions 3 slip cover washable cover