Product may vary “+/-” of 2-4cm allowance from size chart Clothing that is stretchable, will have an average stretch range between 4-8cm.
What does this mean?
Based on sizing table above, if your waist, for example, is 63cm, you may wish to select a size which is smaller and closest to your waist measurement. As this is a stretchable fabric, the product will stretch to fit you better with this selection.
The height and weight recommendation may also help for you to decide better. (if available)