You will find that short sleeves work great for active days when you need airflow.
Vintage Nickel Plate Road Shirt 2XL 90s Steam Train Railroad USA Single Stitch
You will find that Fruit of The Loom shirts hold their shape after many wears.
Vintage Train Shirt Medium Gray Union Pacific Railroad Steam Engine 90s 1999 ^
The graphic print on this tee is subtle enough for a professional casual setting.
Big Boy 4014 Vintage 250 Steam Locomotive Railroad Train T-Shirt
What stands out about this design is the graphic print that covers the entire front.
Big Boy 4014 Steam Engine Locomotive Train Vintage Railroad Cotton Unisex Tee
A nice touch is the black contrast stitching on the sleeves.