Since Keith delved into this T-shirt endeavor, I've learned a great deal about T-shirts. 
Interestingly, size popularity is not at all what I thought it would be.  It seems the larger sizes, like 2X and 3X are more popular than small, medium, large, and XL.  I guess we pool peeps are pleasantly plump, myself included. :embarrassed2:
Also, material is important.  We went to a Nationals baseball game a few weekends ago, and they were handing out free T-shirts.  As well, you could purchase T-shirts in the Nationals store.  The Nationals T-shirts for sale were expensive ($48) and rough-feeling to the touch, and the freebie T-shirt was rough-feeling too. 
Well, I am looking forward to somebody winning next Wednesday who picks the winning combo.  T-shirts come in black and royal blue.  The royal blue is more of a muted blue, not bright.  Also, size 3X is running out quickly; however, I'm saving one just in case the winner of this contest is a 3X.