A nice touch is how the graphic print is slightly faded for a worn-in look.
Pennsylvania Railroad Trains Authentic Railroad T-Shirt [61]
This shirt in Kids Extra Small (2-4) has a classic cut that never goes out of style.
Steam Train Black T-shirt — Crescent Limited Ps-4 Locomotive #1396
A nice touch is that the short sleeves are wide enough to avoid restricting movement.
Steam Engine T-Shirt – Vintage Locomotive Graphic – Classic Railway Train Shirt
You will find that the graphic print is heat-pressed for a smooth finish.
Steam Locomotive Engine Train 1880 t Shirt Vintage train Art Painting Railrad
The black shade is deep enough to look premium without being flashy.