You will find that unisex adult clothing like this works for any season.
SILAS Yellow T-Shirt with Box Logo, Short-Sleeve, S Size
This T-Shirt has a clean hem that doesn’t curl up after a few washes.
$79 TRUE RELIGION Navy UNIVERSITY OF TR Short Sleeve Applique Graphic T-shirt
With a solid hue, this shirt becomes a quiet foundation for louder accessories.
250 Years of American Independence Day US Flag 4th of July Patriotic T-shirt
You will notice the small size has a narrower chest panel for a snug feel.
DD214 Alumni Military Patriotic US Flag US Army Veteran Graphic T-shirt
The small size works best for people with a chest measurement around 36 inches.