The thing is not to compare Castelli Euro-Racer sizing with 'Murican sizing. Here's a "large" Castelli jersey vs. a "large" American golf shirt:



The question is whether it fits and in my experience Castelli runs pretty true to the size chart they post on their website. As to where it's made, in the 3 seasons we've had Castelli as team kit, I've had items made in Italy, China, Romania, and the USA.