I bought this shirt in blue and black. I normally wear a medium, but I decided to order up just in case they ran small. Glad I did. They are fitted and run a little smaller. Large fits great. I don’t want them to be too tight because I need movement on a cutting horse. Material is really nice. I like how they are more fitted than the traditional “cool max” shirts from other companies. They’ll be great for the Cutting pen and will look fantastic with my horse!