3 wheeler pushchair recommended minimum age 6 months pushchair weight 76 kg harness system 5 point safety harness slider not adjustable wheel settings swivelling lockable wheel type solid rubber tyres wheel diameter rear 20 cm wheel diameter front 20 cm number of wheels 3 footrest not adjustable dimensions 105 x 61 x 100 cm dimensions folded 79 x 61 x 25 cm colour red included in delivery canopy shopping bag