Who has some experience with the fluther t-shirt sizing?

I ordered the women’s XL. The sizing is hard to figure due to the high % of spandex in the fabric. If the shirt were made of only cotton (as in the good old days) it would fit perfectly…a slight shape yet not too clingy.

This one feels like sausage casing. it is meant for a young woman with no extra flesh around the middle and hardly any hips and is also much too long.

So I want to re-order and get a man’s long-sleeve , but have no idea about the size.