Sam Witer Jacket size??

Hey all just a random question as im nearing the end of my search for my ultimate prop jacket but was curious, does anyone have an idea of what jacket size the actor Sam Witwer from Being Human could possibly be?

Im guessing Either a Medium or Large.

Can i get some opinions?

thanks all

I moderated a Smallville panel that Sam Witwer was on last Dragon*Con. I would guess that he wears a medium jacket.

I was a stand-in on Smallville when he was on the show, I'd also say Medium.

Thanks for the help guys Much appreciated