Vintage Men’s GAP Flannel /fits a todays size M

Reposhing this item I purchased from @shoptib. Loved it, but ready to rotate for something new. Questions? Leave a comment below! I ordered we this for my man as he wears a large but maybe it had shrunk because instead it fit me. I wear about a size large in women’s size, a size 10/12 perhaps. So maybe this fit is size medium for a man?