Baylor Cotton Short Sleeve Button-Up Shirt

I've bought several of these now in several sizes for my husband, and I think I'd recommend going up at least one size. He normally wears a Large but Large was way too small for him. Extra Large fit better in the chest but was still too tight in the shoulders and sleeves...he couldn't really raise his arms much. Extra-Extra-Large fits him well in the shoulders and gives him more freedom of motion, at the cost of being a bit baggy in the chest and body, but he likes that size best. My husband is rather muscular, so take that into account. If you normally wear a Large and have a trim build, I'd recommend the XL. If you're bigger in the chest, go for the XXL.