Like splathead said, I would not just simply tell them what sizes to print. Being the printer though, you are expected to have a particular knowledge in order to help your customers out. Using these number you can give a pretty good recommendation on what your customer should order. Be sure that they realize that they are only projections though and let them know that you can not be held liable for actual sales!
For the General Adult Population (about 50/50 mix of men and women, using all men’s sizes) here is our sizing ratio setup
2.5 - S
2 - M
3 - L
1.5 - XL
1 - XXL
Because this is a frequently asked question, we have added this topic as a post to our blog. If you would like to bookmark the blog post, or see numbers for additional markets, simply
go here.