Megaplast hot-cold pack for heat or cold therapy Use to relieve bruises, sprains, lumbago, stiff necks, muscle pain Keep in the freezer for at least 2 hours for cold use Microwave for 1 minute for hot use Insert the hot or cold pack into the fabric pouch and apply to the affected area Reusable Made in Italy Contains a pouch + a fabric cover Composition: propylene glycol methylene blue hydroxymethyl cellulose water