New Western Design by Western Blue.  
Aztec Print Short Sleeve shirt.
This is a very comfortable soft fit. 
Breathable 100% Polyester Ripstop Moisture-wicking shirt
Pearl Snap Closure. 
Shirt is standard sizing.  If you wear a medium the medium shirt will fit you. 
Material is also great for cleaning your glasses.  So if you wear glasses it’s easy to just reach down and grab the bottom if your shirt to wipe off the haze on your glasses.  May sound crazy but  this is a great benefit for simple scratch- free cleaning.   If you wear glasses all the time, you know what a hassle it can be to try to clean your glasses sometimes.