The shirt is a slim fit right from the start. I usually wear large, slim-fit shirts and this one fit me perfectly when it was new. I washed it once, by hand, in cold water, then rolled it in a towel then hung it to dry. Despite my care, it shrank maybe 1.5 to 2 inches in every dimension. Now the arms are too short, I can't tuck it in, and it is really snug in the chest. Oh, and when you wash it, the colors run A LOT, so be sure to wash it only with similar colors.See full review