His work emphasized their height and slimness. The Mini Jambox slimness comes from the design of its extruded aluminum uni-body casing. In the American society, a popular beauty ideal is slimness. This slimness reduced drag but also somewhat worsened the task of the two pilots. For an ellipse, the slimness factors are different in different locations. The slimness factor of a 10-by-1 rectangle is 10. The following table shows the slimness factor of various shapes based on the different definitions. For every global slimness factor, it is possible to define a local version. The three ball-based slimness factors can be calculated using well-known trigonometric identities. The "slimness factor" has different definitions in different papers.