These are comfortable, cheap, and last very well.  They have 1 pocket and it has a small slot stitched in it to fit a pen.  My only complaint is that the slot for the pen is kind of small so if you like fat pens it may not fit.  I use pens that have a slightly bigger barrel and a rubber finger grip (Similar to the G2's) and sometimes I have to trim the little support thread at the very top to get them to fit in there.

Great shirt overall!