3 wheeler pushchair recommended minimum age 6 months pushchair weight 10 kg reversible seat backrest 3 positions harness system 5 point safety harness slider adjustable handlebar height 83 108 cm wheel settings swivelling lockable wheel type eva tyres number of wheels 3 safety bar with bumper bar footrest adjustable dimensions 108 x 60 x 108 cm dimensions folded 70 x 60 x 39 cm included in delivery canopy shopping bag rain cover baby changing b