Armor accessories, also known as armor components, were installed in armor for the purpose of increasing the armor's performance. The most common enhancements granted the wearer a number of resistances, however some improved the degree of armor flexibility or had the ability to speed the healing processes of the body. Robes, such as worn by the Jedi, were rarely augmented, although certain enhancements, such as the environment underlay or the biorestorative underlay were adapted for use in robes.