... , instant ice pack, hot&cold pack, reusable cold pack with towel cover, ice box supplier. Magic reusable hot cold pack, instant ... ice pack, hot&cold pack, reusable cold pack with towel cover, ice box supplier.welcome distributors around the world!Characteristic ... this product into freezer to be refrigerated in advance for 12 hours, and then use as refrigerating media when needed.Precaution ...