Sport buggy recommended minimum age 6 months pushchair weight 92 kg frame material aluminium carrycot pushchair seat brakes locking brake canopy viewing window harness system 5 point safety harness slider adjustable handlebar height 90 106 cm folding mechanism collapsible special features reflective light upholstered seat wheel settings swivelling removable lockable wheel type eva tyres number of wheels 4 max load 15 kg safety bar removable