A size indicated on the label does not fully describe how a garment will fit a person. Shape, proportions and way of wearing it affect the experience. Commercial communication should offer information that allows the customer to compare the product with their own concrete needs.
I propose to describe the fit with relevant measurements and understandable words. A term like “regular” can be interpreted differently. The indications should explain which part of the garment is measured and how, avoiding an apparent accuracy that does not correspond to the actual detection.
Imagine a jacket chosen to be worn over a sweater. The same jacket tested on a shirt can produce a different perception. Asking for intended use helps to read the test result and discuss any available alternatives.
The quality of the explanation occurs in questions and errors of choice. A useful card reduces uncertainty without ensuring a universal fit. The service acquires value when it allows the person to recognize the relationship between the characteristics of the garment and the use he wishes to make of it.