In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Jacket
To dream of a jacket is a bad sign. If the jacket is black then you will have financial problems, if it’s new then you will have misfortune in various aspects of your life. If it’s tight on you then be careful as someone in your circle wishes you harm.