3 wheeler pushchair jogger pushchair recommended minimum age 6 months pushchair weight 105 kg carrycot pushchair seat brakes locking brake canopy viewing window harness system 5 point safety harness slider adjustable wheel settings swivelling lockable wheel type pneumatic tyres wheel diameter rear 41 cm wheel diameter front 30 cm number of wheels 3 footrest not adjustable colour grey included in delivery canopy with view window handbrake shop