Product Information from Heritage Store Manufacturer's Product Description: Cotton Flannel is a richly textured; heavy quality; reusable unbleached fabric used for castor oil packs. Manufacturer's Product Research: Palma Christi. Natural unbleached 13' x 15' inch (33 x 38cm) pack. For use in castor oil packs. Recommended in the Edgar Cayce readings. Satisfaction guaranteed. Manufacturer's Directions/Recommended Usage: Boil or launder flannel to remove any impurities which may remain in fabric. Fold at least once to make a pack of appropriate size; and saturate with castor oil by pouring oil onto pack or dipping pack in preheated oil. Position pack over abdomen and cover with a piece of plastic and a heating pad. A towel may be useful to protect bedding. Turn heating pad on low or to a setting the body tolerates. Do not use heat if infection or fever is present or suspected. Allow pack to remain for an hour or more. Longer applications can be beneficial if you avoid falling asleep with heating pad turned on