Differences in several purchases over time lead me to believe that calling a shirt "size__" is based on holding it up to the back of a randomly chosen coworker who says they wear size__ and tossing it on a table where a "size__" label will be sewn into it. My most recent order included two long-sleeve crewneck T-shirts made with the same fabric, both ordered in 3X and carrying that label. The only differences were color and the pattern printed on them - oh, and the eight inch difference in width at the shoulders and chest. I am fairly sure that if I took all the shirts I have purchased in 3X and lined them up and measured them, there would be no two of the same dimensions and a range of at least 8 inches from loosest to snuggest. Some of my 3X shirts are a bit bigger than they need to be; so far I haven't received a "3X" shirt that is simply too small to wear, but I expect it will happen sooner or later. I would not dare order a smaller size regardless of style. So, set some size standards, will ya?