The right column of the fiber type panel contains the parameters controlling the geometrical and physical properties of each fiber type of the fibrous structure.

Some fiber parameters can only be set for some fiber types, such as the selections under the Bundle tab for fiber bundles, the Curl tab for curved fibers or the Torsion tab for Curved Elliptical, Cellulose, Rectangular, or Angular cross-section fibers. The fiber length can only be set for finite (Short or Curved) fibers but not for Infinite fibers.