Denim - the name itself is through to derive from 'de Nimes' or 'serge de Nimes', a cloth originated in the Gard district of France. The Textile Institute defines denim as 'a warp dyed yarn and undyed weft yarn'. While denim is instantly recognizable as a fabric to most people, it has such a wide variety of end-users and its construction details are so diverse, then it is difficult to describe and concise what denim is. However, the traditional denim is, as defined above, a warp - faced cotton fabric, in 3 x 1 twill weaving.

Color - indigo belongs to the class of vat dyes and occurs natural in the indigo plant, which grows in India and Java. Nearly all the indigo used today is synthesized by various chemical processes.

Characteristics - As compared with other dyestuffs, indigo color will be faded slowly and constantly, such special tone still remained after wearing and washing. There is no migration of color to the undyed weft yarn on washing so that the typical denim appearance persists.

Flexibility - Traditional cotton denim fabric has the strength, absorbency, and adequate disorder characteristic to remain competitive advantage in the garment market.