Ribbed woven elastic is the strongest waistband elstic. the added heavy duty rib structure provides mazimum cross strenght to prevent the elastic from curling or rolling. * Ribbed elastic is used in a variety of applications including waistbands in shorts, skirts, slacks, pants, gloves, underwear, hats and shoes. * Each spool contains 20 yards of elastic that is white in color and is 1 1/2 inches wide * 86 percent polyester, 14 percent rubber