I have some Castelli Bib Shorts in my normal size (medium) and they are a little more snug than other brands but comfortable. Not sure where they were made.

Sugoi on the other hand was way too small. I definitely need a full size larger for their stuff.

If I'm buying online, I usually scan reviews to see what people say about sizing. If something is out of the ordinary, someone will usually mention it.

When I was riding motorcycles, I found that European companies generally sized their stuff smaller and having to buy one or two sizes larger than what I was used to was not uncommon.