If you are between sizes, the small runs slightly smaller than average.
Custom Name Boston Fire Department Engine 17 Dorchester 3D T-Shirt
You will find that the short sleeve cut is consistent with classic t-shirt standards.
Big Boy 4014 Vintage 250 Steam Locomotive Railroad Train T-Shirt
A nice touch is that short sleeves make this shirt easy to put on and remove.
Custom Name US Army 101st Airborne Combat 3D T-Shirt HS554
An unbranded shirt like this one is a must when you want simplicity.
Vintage Train Steam Locomotive T Shirt Mens Large White Graphic All Sport
What stands out is how the white color stays opaque, so no see-through issues.