I'm a 6' 180lbs guy. After reading the sizing-guide I ordered the "Sail" color in a medium. Color is great. Couldn't be happier with the quality and style of the shirt... HOWEVER it turns out these shirts run LARGE! Not only does it have enough extra cloth to form a cape behind me, but the sleeves extend 2 inches beyond the ends of my fingertips!  I will be exchanging for a small!