Our exclusive designs in Tennessee Volunteers T-shirts will help you stand out among your fellow University of Tennessee sports fans. Our custom graphics team at Campus Colors has created a great looking icon and arch Tennessee T-shirt with the letter T over the word Tennessee in orange on this short-sleeved sport gray tee. Our Tennessee Vols T-shirts are crafted of 100 percent premium cotton for good looks and durability. Why the name Volunteers? Tennessee has been known as the Volunteer State since the War of 1812. That's when a young country was introduced to the fighting men from Tennessee who volunteered in large numbers to be at the front lines of the Battle of New Orleans.