It is important to know your Bat-weapons. This Batman Batarang on Black T-Shirt will help. This 100% cotton Batman Batarang on Black T-Shirt has all sorts of specialty batarangs used by the Caped Crusader.
These appear to be some older batarangs from the comics. This shirt is pretty cool and when you are wearing it, you will be dropping some knowledge on other Bat fans.
Get it for a fellow Bat fan as a gift or get it for yourself. Either way, this is one rad shirt. $21.99 from Superherostuff.com.