Yarn is a long, continuous length of interlocked fibers suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery and ropemaking. Spun yarn is made by twisting or otherwise bonding staple fibers together to make a cohesive thread. Twisting fibers into yarn in the process called spinning can be dated back to the Upper Paleolithic, and yarn spinning was one of the very first processes to be industrialized.