Therapeutic Eye Mask. Store in freezer and use to reduce puffy eyes, help soothe headaches, etc. Heat up in the microwave and use to add moisture to dry eyes, rehydrate, soothe, etc. Made with cotton flannel and Canadian prairie wheat. Features: Removable washable cover. Weighs 7 oz. Instructions for hot/cold use are on the back of the packaging the wheat bag is sold in.