This shirt is very cool. By SpaceX for SpaceX with Dragon logo on chest, the neck binding says SpaceX even the buttons say SpaceX. Unfortunately, the sizing does not show. I don’t know whether the facility uses some sort of technology like black light to show sizing, but I’ve usedinfrared to show the inside but I cannot make out the size. My husband is wearing it and he is a man’s large and it is just a touch too big in the shoulders so I would call it an extra large. Excellent condition, no flaws.