A digipak is a special CD album that is a folded book-style album. Sometimes the album has a CD and a DVD within the digipak that has many folding panels. Some have a minimum of one, up to four folds that contain elements of the digipak of the band/artist of the album. They are normally made of card instead of the normal plastic CD album cases. Digipaks used to be very are whereas now they are very popular and used by many bands and artists.