The pants length can be customized.
For all precise measurements (inches or cm)
I would advise you to use your own best fitting pants as a model.
A= .. / B = ..
"If, for example, your wear jeans size - 34 (A= wide)"
and then actually measure your pants,
they will usually be 2 inches bigger A= 36 inches.
Depending on your country,
confection inches/cm may be quite different from 'real life' units!"
Let me know again..
A= . ?
B= . ?
C= . ?