The shirt feels and fits well. It breathes well and wicks away moisture as intended. 5ft 9in, 150# athletic build, bought a size medium. Fits from slightly loose to a little tight, but definitely not tight against the skin. The sleeve openings are a little tight around the biceps, but don't restrict them. It has a nice professional look with a nice heavy collar. that keeps its shape. Washes and dries well with no visible shrinkage or wear. Overall I'm very happy with the fit and quality, especially considering the price. I will definitely buy more in other colors.