my son usually wears an XL in long sleeve t-shirts. I am buying one online so I am not sure how big they run. He likes them to be a little loose, not fitted.
They run true to size. So if he wears and XL then that’s what he would wear in Diamond Supply Co. but if he wants them a little bigger than go with the XXL.
Diamond Supply Co Womens Hoodie
It actually depends on the fabric. Some say that it has be pre-shrunk so you dont have to worry about it. so get more info from the website itself:)