The arm holes, unlike most slim fit shirts, are not very tight. It's also flattering over the neckline as my husband doesn't like his V necks too high or low. He is usually in between a medium or large, depending on the brand or style, but this is just the right fit
Bought this for my husband who is tall and thin and hates baggy clothes. It fit him very nice he liked the color and the v neck was nice and not too deep. The material is very soft and washed nice too.