Very nice shirt. I ordered my regular XL and it fits as expected. This shirt is well tailored and stylish, even the buttons are colour-contrasted, subtle without being flashy. The material feels thick and durable, but is lightweight at the same time. In other words, high quality. Unfortunately winter is coming and I can't wear it in hot weather to test the comfort in summer conditions. What I can say is that it is extremely comfortable for everyday wear and in my opinion compared to other shirts I own this shirt works well even in summer weather.