I decided to buy the black polo Robotech shirt from Robotech.com because it’s something I can wear to work! http://www.robotech.com/store/viewproduct.php?id=230
How big are the logos? Well, here’s the VF-1S GNU-Dou next to the RDF logo:
And here are the logos next to a tape measure:
Overall, I’m very happy with it. The weave is about the same as a Ralph Polo Lauren polo shirt, and is about as thick, too.
This polo shirt also comes in white and gray. Check it out at Robotech.com!