I had been wearing short-sleeve shirts from Wrangler, bought at K-mart.  However, this summer I was looking for something different.  I found the Outdoor Life brand from Sears.  I bought a couple, and then bought some more.  I like these shirts.  Granted, I bought short-sleeved shirts. However, I see they do have it in 2XLT long-sleeve.  You may or may not find it in your local Sears store. More than likely, you may need to order it by mail. 

Here's a link to one:

Outdoor Life shirt