I wear a size 42R and usually have to order an XL in tshirts. But this shirt (XL) was a little large for me. I would estimate it as a 44R to a 44L size. It looks and feels great however, so I just wear it loose. I thought there was nothing truly remarkable about the shirt. Nice athletic cut with color trim on ends of short sleeves, however, my wife did compliment me on it, and that is the case with about 15% of my shirts. So, overall, nice find.
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