Travel system recommended minimum age new born pushchair weight 101 kg carrycot car seat brakes locking brake canopy viewing window harness system 5 point safety harness slider adjustable handlebar height 95 105 cm folding mechanism collapsible wheel settings swivelling lockable wheel type solid rubber tyres wheel diameter rear 24 cm wheel diameter front 16 cm number of wheels 3 safety bar with bumper bar footrest adjustable dimensions 7