A sloper pattern is a very basic pattern that acts as a building block to make other patterns. It is a pattern that has no seam allowance or ease for wearing . It has no fancy design features such as pleats or gathers. It is a simple pattern that is made using your precise body measurements. It is not made to be worn but allows you to get a drawing that gives you an accurate fit and make sure the proportions are right . It is a paper representation of the body.