3 wheeler pushchair jogger pushchair recommended minimum age new born pushchair weight 128 kg brakes handbrake harness system 5 point safety harness slider adjustable handlebar height 84 117 cm wheel settings swivelling lockable wheel types pneumatic tyres air chamber wheels wheel diameter rear 31 cm wheel diameter front 31 cm number of wheels 3 footrest adjustable dimensions 117 x 67 x 119 cm dimensions folded 85 x 67 x 36 cm seat width 3