This type of denim is made from twill which is rubbed and tightly woven. The experts pass two or more warp threads under the yarn. Talking about the colours, it generally comes in blue dye and the horizontal Yarns remain white.
In the threads of structure denim fabric, blue colour is dominated by the white thread that is used in the weft area. This is the reason why blue jeans are white on the other side. The processes of Indigo Dyeing that we use are helpful in creating the Denim characteristics like feeding and being the weft threads white.