Others may disagree, but a dear friend made a flannel rag quilt for me which is super warm & heavy in a favorite of mine of Laurel Burch patterns. She also took 2 pillowcases sewed them together & made a bag for me to wash the quilt in as she said it will definitely shed a lot. She had washed it this way before giving it to me and warned me not to wash it without the cases. I haven't washed it as yet, but doubt I will ever wash it in my home machine. But I will use the 2 pillowcase holder when I go to the laundromat.
Thats the best I an suggest.
Enjoy it, mine is so warm & comfy.