Since the James Tyler Mens Business Shirt, Slim Fit Premium quality liked it so much, I have the present shirt (James Tyler Men's Casual Shirt with design details, slim fit) that is the same collar size ordered in the same size. But this seems to be more smaller, since the sleeves are shorter and the material in the shoulder area spans once the arms are stretched forward (the carrier is 1.84 m tall, weighs 84 kg has 77.5 cm long arms and a normal Cross ). Here would clearly a number should be larger. Too bad that the manufacturer makes no precise size.
Otherwise, the shirt would have been perfect: stylish fit, interesting and auflockerndes color pattern on the collar, comfortable to wear thanks to the material, processed very clean and easy to iron. Even after the washing were the colors and the shape obtained.
So I can give to anyone who is interested to do just a number to choose when buying rather greater.