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 - Slippers
If you are single and dream of new slippers this means that the emotions you feel for someone are reciprocated. If you dream that you are wearing old slippers, you will be disappointed in love.