This is an awesome jacket, but it may take a few orders and returns to get the sizing right. The sizing runs small as I know my chest size from the custom suits I have ordered for years. I have a 50' chest and ordered the 2XL and was concerned as I always am about anything ordered online that has sleeves. My sleeve length is 39'. I was pleasantly surprised when the 2XL came as the sleeves fit, but the chest was very tight. I sent it back, spent another $11.99 for the label fee amount, and selected a 4XL. This one fit like a charm although the website says this jacket size is for someone with a 56' chest. So the moral of the story is they run small. However, when you get the right size, you will love this jacket.