Child car seat series cybex silver carry weight 15 36 kg age 3 12 years group 23 with isofix side impact protection harness system seat belt exterior measurements 48 x 65 82 seat size 32 x 23 cm weight 7 kg headrest function tiltable headrest adjustable backrest height adjustable adjustable headrest 11 x colour black manufacturer specific features lsp system cover material polyester slip cover washable cover