I have tried on the 38, 40 and 42. They all seam to have the same arm length and neck size. The body size does increase. They all fit, however there is chaffing in the arm pit area with the 2 smaller sizes. My normal shirt size is 15.5, My arm length is 33/34. So take the advice of others, order up a size or two. Nice quality shirt. Exchanged very efficiently. Only did this once as the size 38 was for a friend.

Booth - CA

Perfect fit and quality.

Micallef - MT

Great shirts, fits nicely, excellent service.

Brunt - CA