Buggy recommended minimum age new born pushchair weight 766 kg backrest multiple harness system 5 point safety harness suspension wheel settings swivelling lockable number of wheels 4 max load 22 kg safety bar with bumper bar footrest adjustable dimensions 824 x 487 x 1085 cm dimensions folded 31 x 275 x 108 cm colour black included in delivery rain cover bumper bar applications city travel shopping