I bought XL after I read the four top reviews saying to buy one size up from this brand. I am 5 11 and 225 of average build. I have extra weight, but I don't look fat when dressed. XL looks like I am wearing a tent. The quality is okay. They are nice enough.

These shirts are a nice color and seem to be pretty good quality. They come in a US size and Asian size. Mine was US medium and Asia large. I compared it to other US medium shirts of good quality and the shoulder is 1.5 inches larger and the chest is more than two inches wider, so more than 4 inches in circumference. I would return for a small, but I'm afraid that would be too small. :- (