Product Information from Heritage Store Experience all of the benefits of a castor oil pack with the convenient aid of our wrap-around holder. Two velcro strips secure the flannel over your abdomen while an ample-sized pouch holds your heating pad in place. Flannel-lined vinyl protects your heating pad and clothing from the oil so that you can simply relax 20' x 12'. Suggested Use: Place plastic side of holder against saturated wool or cotton flannel that is placed on desired body area centering pack between the flaps. Secure with straps and place heating pad inside pouch of holder. Adjust heat setting as necessary. Hand wash only with mild soap and water. Plastic may be cleansed with solution of baking soda if desired. Warnings Caution: Do not fall asleep without turning off heating pad.