This shirt should be regular fit. I have the 190-weight version of this shirt. It's not totally hugging like the body-fit series, but not loose like a t-shirt.

Almost nothing Icebreaker sells could be considered relaxed. So that option is out. Between regular (somewhat of a subjective term) and Bodyfit, it is not technically found under their Bodyfit line, but all the same every piece I've gotten on the men's side, as well as my wife on the women's side has been form-fitting. Along the lines of "athletic fit" clothing except for the slim fit pieces which cling even more but are stretchy.