Buggy recommended minimum age 6 months pushchair weight 71 kg harness system 5 point safety harness slider not adjustable series hauck turbo wheel settings swivelling lockable wheel type air chamber wheels number of wheels 4 safety bar with bumper bar footrest adjustable dimensions 80 x 48 x 112 cm dimensions folded 107 x 21 x 39 cm seat width 32 cm included in delivery canopy shopping bag bumper bar application city