In any business or custom apparel making there really is no standard sizing!
The biggest question I get is this one other than cost, lol
But anyways, with this sizing your team is one of the most time consuming and important tasks.
Always ask for a sizing kit! If you don’t have time for that, then you cannot expect the manufacture to be responsible for time line issues.
Every manufacture has their own way of design and sizing. Each custom cut can make the fit different as well
So keep in mind PLANNING AHEAD is so very important