Terumo blood bags are high-quality, high-value blood bags designed for the collection, processing and storage of whole blood and blood components. The blood bags are single packed in a polypropylene bag and sterilized in the packaging, which helps ensure sterility prior to use. The polypropylene bags are then packed in a secondary overwrap package of aluminum foil. The amount of polypropylene packages per aluminum foil depends on the configuration of the blood bag system. Some bag configurations are also available individually packed in an aluminum pouch, enabling 36 months preservation of each individual blood bag.