Child car seat series maxi cosi tobi carry weight 9 18 kg age 8 months 4 years group 1 side impact protection harness system 5 point safety harness padded seat belt padded clasp exterior measurements 56 5 x 74 x 44 seat size 29 x 31 cm weight 89 kg adjustable backrest central belt adjustment height adjustable adjustable headrest 7 x colour grey number of positions 5 slip cover washable cover