Hello and welcome!
You are looking at a Harry Potter shirt from the Wizarding Trunk. It is a size large and is brand new. The front of the shirt has a small "Potions Club" logo on the upper chest and a much larger print on the back. The materiel is very soft.
Here are the measurements:
chest- 20 inches across
shoulders 19 inches across
length- 28 inches from shoulder to hem
This items comes from a smoke free and cat friendly home.
If you have any questions, please feel free to message me.
Thank you and have a wonderful day!