The long sleeve cut allows for easy movement without riding up.
Pro Club Heavyweight Long Sleeve Snow White Thermal Size M-7 XL Mens Thermal
You will find that the long sleeve length does not shrink much in the dryer.
Pro Club Heavyweight Long Sleeve Khaki Thermal Size M-7 XL Mens Thermal Shirt
The long sleeve cut allows for easy movement without riding up.
ARMY SOLID OD GREEN OLIVE DRAB PLAIN MENS ROTHCO T-SHIRT S M L XL 2X 3X 4X
This one is made for men, so the shoulders and chest have a roomier cut.