Dickies has never let me down. 5'10" and over 300lbs the 3X fits well. As it's made of cotton it has shrunk. The crew neck is no joke even fully wet the collar does not sink stays right at your neck so if your into that you'll love this shirt. The heavy weight fabric is a bit more than I was thinking it would be especially in Alabama. This isn't the kind of shirt i'd wear in 100+ degree weather with high humidity. If I were in a colder climate with more mild weather this would be perfect.