>> (...SNIP...)
>> > Ideally we might control for point 1 by comparing some example shirts
>> > from the supplier with previous years' ones, though I suspect that's
>> > now impractical in the required schedule. What some suppliers call S
>> > might be M from another supplier, etc. -- and for the women's sizes,
>>
>> We won't get women's sizes this year, unfortunately.
>> (...)
>
> So, should we mail everybody who selected a female shirt size asking
> them to select the _right_ male shirt size?
we have done t-shirts before with that provider and the women sizes are one size smaller