Yarn is essential in our life. The clothing, apparels, upholstery of furniture is made up by these materials. The yarn is used to make textiles using a variety of processes, including weaving, knitting, and felting.

Yarn consists of several strands of material twisted together. Each strand is, in turn, made of fibers, all shorter than the piece of yarn that they form. These short fibers are spun into longer filaments to make the yarn. Long continuous strands may only require additional twisting to make them into yarns. Sometimes they are put through an additional process called texturing.

15 different types of fibers are used to make yarn. These fibers fall into two categories, natural and synthetic. Natural fibers are those that are obtained from a plant or an animal and are mainly used in weaving textiles. The most abundant and commonly used plant fiber is cotton, gathered from the cotton boil or seedpod when it is mature. They can be produced in many ways. Different coloured fibers can be blended together then whirl as one yarn. Printing or dyeing pattern onto roving or yarn can apply colour. Spots of colored fiber can be twisted in with the base yarn.