♥ that one girl again ♥
nope it doesnt really matter. some ppl will be more concerned with the brand (i.e. ralph lauren, lacoste) than whether there is a pocket or not. but i can tell you that some "nerds" wear the ones with pockets so they can put their pens in there. remember pocket protectors? lol but dont worry and just buy a shirt that you like that looks good one you :) and i have seen older ppl wearing ones with pockets as well, now that you mention it. like teachers and ppl of that nature. mature is okay if thats the look you are going for. if not, then maybe you might want to stay away from the pockets.

SweeLee
yes, polo shirt with pocket look mature.

Daisy G
I've always felt like a polo shirt with a pocket is for professionals. So if you want to project an image of maturity, then the pocket is a better choice. But the presence or absence of a pocket shouldn't make much of a difference as far as your cool factor.

totally_luvable
Little pockets are a nice touch, and are really cute. But as far as fashionable or unfashionable it doesn't really make a difference in the look of the whole polo. Polos are classic, I don't think you can go wrong with wearing one.