When you think of short hairstyles, what usually comes to mind is hair that is cut way above the shoulders or even those extremely short pixie cuts that often scares women away from a shorter cut.
Medium hairstyles is not too long and not too short.
Some of the choicest long hairstyles as well as short hair styles can be conceived with medium hair.
The bob is a great sample of a medium haircut that can go shorter or a little longer for several different hair styles.