Looking for a casual fit poly short sleeve t-shirt (like the ones many buy at Target for $7.99) but with one or two pockets in back and a zipper.

I'm done wearing tight lycria roadie-type jerseys. And using a small under-saddle bag to carry the tube, multi tool, glueless patches and phone rubs me the wrong way, literally. Not to brag, but my hamstrings make contact with pretty much every saddle bag used on my post and seat.

Am I destined to wear tighter sleek jerseys or does a casual looking tech T exist with the above specs?