Its a great shirt for the casual fan and the dyed in the wool trekkie!  Why?  Because its a T-shirt first, that passes with a small star trek insignia (very well placed and done BTW) and not a realistic space age material...however, you the wearer know its a Star Trek Uniform first, and a T-shirt second!  :-)  I love mine and it sparks a lot of conversations, and who doesn't love talking about Star Trek?!