I am a Dickies fan from way back!  (Hey, you know what I mean!)  We used to substitute Dickies work clothes for our issue work uniforms in the Coast Guard (back in the day)because the quality was so much better.  This XLarge size accommodates unusually large arms, necks and ...sigh...bellies very well.  Skinny people may want to go down a size from what they are used to, but they will not be disappointed with their purchase.