Unbleached Flour Sack Towels, Real Natural Tea Towels, Set of 1227 27 Set of 12 Real Natural Unbleached Cotton Real, Natural, Unbleached Flour Sack Towels For Food Crafts, Farmhouse Kitchens, and Needle Arts Some customers call them natural, some call them unbleached, some call them real flour sack towels they're all talking about the same thing: cotton that was never bleached, never brightened, and retains the warm off white tone it had straight from the fiber. These are those towels. Everything else is identical