I would upload a pic, but I didn't get the comfort package on mine. I am one of the few that didn't want leather. I've had leather in a few cars (still do in my Corvette) and have found cloth much more comfortable in hot weather (especially with shorts on). But anyway, there is a hockey puck size light and rain sensor attached to the windshield just next to the rear view mirror that is pretty big in size. I seen one at the dealership when I picked up my car. I would guess it to be between 3 to 4 inches in diameter. I'm sure someone else will chime in with the right size. I, at first, thought it might have been an XM radio antenna, but not.