Damnable,

If you're currently wearing t-shirts, and don't feel the need for the rear pockets that jerseys provide, you have lots of options. Check out your local Wally World and sporting goods stores, you'll find lots of choices with little or no advertising on them. I have some Wilson tees from Target that are made from wicking synthetics that I use for MTB riding. I also have some long sleeve form fitting ones from Wally World that are their knock-off of UnderArmor that I use as a base layer for road riding when the temperatures drop....

B'Dog