a tweed, [houndstooth] or camelhair jacket; a long raincoat worn over one of the former

a [chunky wool] sweater, preferably made in the british isles

a wool turtleneck

plaid slacks, corduroy pants, jeans

dress shoes or boots

Can be complimented by glasses and/or a restrained jewfro. One does not need to be a professor to embrace this style, and it is usually more effective in garnering compliments if worn by someone who is not a professor. The look is an homage to Donald [Sutherlands] style in many of his 70s film roles including Klute and Dont Look Back.