You can buy all the $399 hunting shirts you wish. I just asked in what ways this rather pricey item is superior to a normal wool shirt. None of you seems to know, or at least you are not telling.
I have owned, prior to moving to Florida, a number of wool shirts and they all were extremely quiet, and quite warm as well.
I think "quiet" is a standard feature of all wool shirts. I recall some rather raucous nylon windbreakers, but I have never seen nor nor heard a wool shirt that was not really, really quiet.