You will find that this shirt comes in S to 5XL sizes.
Spicy Sophie Cunningham 8 Fan Shirt, Indiana Basketball Apparel
A nice touch with short sleeves is that they never get in the way during workouts.
Vintage Oliver Tree Cowboys Don’t Cry Music Fan Shirt
This shirt is offered in sizes S all the way to 5XL.
Indiana Classic Basketball Arch Basic Cotton T-Shirt
This one is made for men, so the shoulders and chest have a roomier cut.
George Washington Lincoln Playing Guitar Abe Lincoln 250th T-Shirt
What I notice is the crew neck, which has a slight stretch for easy movement.