Helpful Hints:

I am 5' 9", weigh 170 pounds with a slim to medium build.  The Marcello classic shaped fit in size Medium fits me perfect.  I do prefer a size Large for the tees and polos for a relaxed, slightly off the shoulder fit.

I am 6' 2", weigh 210 pounds with a medium build.  I do have a medium sized belly.  The Marcello classic shaped fit in size Large fits me perfect, but is not loose.  I like my polo and tees to fit comfortable to loose and choose size XL.