Digipaks
A digipak is a booklet this includes a lot of the band's information in, they choose what they want to put into it, a list of the songs is usually key, also a short bio on each of the band members. But this is completely customisable to the band's preferences.
The digipak usually opens up into three parts and also a plastic holder

Digipacks are a type of CD packaging made out of card stock or other heavy paper or cardboard material. They can open like a book, or it can have three parts so that one portion of the packaging opens to the right and one to the left with the CD in the centre. Usually, the part that holds the CD is plastic like a normal CD case - it also allows you to attach the information to the plastic.