The nice lady at Anderson's told me to fold it in half side to side and then fold the top down to the bottom. That was how they fold them to put in the cases to send out for hire. I packed my new heavyweight that way and the few wrinkles fell out after a couple of hours. My lightweight e-bay kilt got rolled and stuffed in one leg of a pair of hose. No wrinkles with that method and that kilt will wrinkle if you look at it hard.

YMOS,
Tony