I can usually wear a medium in most clothes . I ordered this in a large because it was all that was available at the time . It fits perfect ( do not like tight fitting clothes ) . As others have said , the thumbholes are way too high to be of use . But not really of concern to me .I wear this around the house most days , it is super cozy and very light in weight for the warmth . It is nice enough and tailored well , should you want to wear it out and about . Not having zippered pockets might be an issue for wear outside the home.