Only twisting is required to process filament fiber into yarn, but staple fibers must be carded to combine the fibers into a continuous ropelike form, combed to straighten the long fibers, and drawn out into continuous strands, which are then twisted to the desired degree. In general, the amount of twist given the yarns determines various characteristics. Light twisting yields soft-surfaced fabrics, whereas hard-twisted yarns produce hard-surfaced fabrics, which provide resistance to abrasion and are less inclined to retain dirt and wrinkles. Fabrics made from hard-twisted yarns, however, are subject to greater shrinkage. Hard-twisted yarns are used in producing hosiery and crepes.