The exact measurements of the VanMoof S3 & X3 can be found below:  

VanMoof S3

• Top tube diameter S3: 59,4 mm
• Seat post diameter: 34 mm
• Seat height (from the ground): 91.5 cm - 110 cm
• Handlebar width: 65 cm

VanMoof X3

• Seat post diameter: 34 mm
  
• Seat height X3 (from the ground): 80 cm - 98 cm