TUC,
Here's the sizing...
Size Scale (Chest)
Small: 34-36
Medium: 38-40
Large: 42-44
XLarge: 46-48
XXLarge: 50-52
XXXLarge: 54-56
The shirts fit great - I am very picky with the way my tees fit. I like them fitted a bit in the chest, shoulders and arms, and kinda loose in the belly.
These are perfect.
Matt